A coordinated community study may answer part of it
Decision at stake: Whether a defined transfer method improves delayed post-arrival outcomes for a measured package-to-receiving-water difference.
Primary endpoint: Survival and condition through delayed follow-up, with immediate behavior kept as a secondary endpoint.
Minimum design: Prospective matched shipments or simulated transport units assigned to clearly defined transfer methods, with package chemistry measured at opening and receiving water standardized.
Required reporting: Animal source, package unit, density, transit history, opening temperature, pH, ammonia and conductivity, receiving water, exact transfer trajectory, allocation, package-level denominators, delayed deaths and exclusions.
Community can contribute: A shared protocol across independent shipments can contribute if the package is the unit, methods are assigned prospectively and delayed outcomes include every animal.
Community observations cannot establish: Self-selected acclimation stories without package chemistry, comparison or delayed denominators cannot identify an ideal rate or duration.
Closure rule: The answer remains conditional on package chemistry and receiving-water contrast; no one clock time may be generalized beyond the tested protocol.
Search trail: transport-acclimation-2026-08
A coordinated community study may answer part of it
Decision at stake: Which exact packaging, density and weather histories support a bounded shipping release gate.
Primary endpoint: Live arrival plus survival and condition through at least seven days, with temperature and bag chemistry treated as exposures.
Minimum design: Versioned package trials across independent shipments or validated transport simulations with prospective package comparisons and delayed follow-up.
Required reporting: Package version, film and water volume, oxygen method where used, animal source and density, fasting, insulation, heat or cold pack, complete internal temperature trace, duration, carrier events, opening chemistry, receiving protocol and package-level outcomes.
Community can contribute: Consenting recipients can return logger, opening-chemistry and delayed-outcome records under one frozen package protocol.
Community observations cannot establish: A delivered package, carrier scan or immediate live-arrival count alone cannot validate a weather gate or long-term animal outcome.
Closure rule: Each conclusion applies only to the versioned package, density, route and temperature history tested; material packaging changes reopen the gap.
Search trail: transport-acclimation-2026-08
A coordinated community study may answer part of it
Decision at stake: What offspring distributions can be expected from documented named-line crosses rather than seller-chart folklore.
Primary endpoint: Complete phenotype counts in F1, F2 and backcross generations under a fixed scoring method.
Minimum design: Source-separated replicated crosses with documented parents, contamination control, parentage confidence, common rearing and scoring conditions and complete offspring follow-up.
Required reporting: Scientific-name claim and identification basis, seller line and source, parent images and grades, cross direction, family and tank structure, mating uncertainty, all eggs, hatches, survivors and scored offspring, scoring method, exclusions and raw phenotype counts.
Community can contribute: Experienced breeders can run preregistered family-level crosses with complete records, including ordinary, unexpected and unmarketable offspring.
Community observations cannot establish: Trade names, selected showcase photos and survivor-only summaries cannot produce inheritance ratios or prove genetic purity.
Closure rule: A result closes only the exact documented cross and scoring method. Replication across independent source populations is required before a line-name generalization.
Search trail: named-morph-crosses-2026-08
A coordinated community study may answer part of it
Decision at stake: What hatch-to-death lifespan distribution keepers can use for colony planning without repeating an anecdotal maximum.
Primary endpoint: Individual time from known hatch to confirmed death, with censoring and removals retained.
Minimum design: Prospective known-hatch cohorts across independent home-like systems with durable individual or family identity, fixed observation schedule and complete cause-neutral survival accounting.
Required reporting: Hatch date and family, identity method, sex when distinguishable, system allocation, temperature and care history, transfers, last-seen and confirmed-death rules, censored animals, all losses and time-to-event uncertainty.
Community can contribute: A shared long-term protocol across independent colonies can contribute censored individual histories if identity and loss rules are fixed before outcomes.
Community observations cannot establish: The oldest visible shrimp, purchase-to-death interval or disappearance from a colony cannot establish a hatch-to-death distribution.
Closure rule: Report a distribution with censoring and uncertainty, never one lifespan number; source and system replication limit transfer.
Search trail: aquarium-lifespan-2026-08
Dedicated controlled research is required
Decision at stake: Whether a measured nitrate history can support a long-term intervention boundary rather than a copied universal number.
Primary endpoint: Long-term survival and reproductive output, with growth, molting and sublethal condition retained as separate endpoints.
Minimum design: Independently replicated nitrate-only concentration treatments spanning multiple life stages, with a prospective duration long enough to include repeated molts and broods and with the aquarium as the treatment unit.
Required reporting: Measured nitrate concentration and reporting basis, ammonia and nitrite controls, ions, pH, temperature, oxygen, feed, density, allocation, vessel counts, animal denominators, missingness, uncertainty and all planned endpoints.
Community can contribute: Keepers can document measured nitrate histories, methods and colony outcomes to refine realistic exposure ranges and reveal candidate confounders.
Community observations cannot establish: Unassigned tanks with different maintenance, food, source water and colony histories cannot isolate nitrate or define a no-effect concentration.
Closure rule: The gap narrows only after complete chronic methods and independently replicated nitrate-only outcomes are reviewable; one successful tank or acute test cannot close it.
Search trail: chronic-nitrogen-2026-08
Dedicated controlled research is required
Decision at stake: Which oxygen histories require aeration, flow or emergency intervention for a defined life stage and temperature.
Primary endpoint: Survival and reproductive completion, with behavior, growth and recovery analyzed separately.
Minimum design: Assigned oxygen treatments in independently replicated systems with continuous or sufficiently dense traces, controlled temperature and biomass, multiple life stages and a planned recovery phase.
Required reporting: Calibrated oxygen method, complete time series, temperature, pressure or saturation basis, flow, surface exchange, biomass, density, feeding, allocation, vessel denominators, animal denominators and censored outcomes.
Community can contribute: Repeated calibrated oxygen traces paired with time-stamped observations can reveal realistic events and help define experimental histories.
Community observations cannot establish: One spot reading or an animal at the surface cannot diagnose oxygen causation or establish a chronic threshold.
Closure rule: The gap narrows only for the tested temperature, life stage, duration and endpoint after replicated oxygen histories and recovery outcomes are available.
Search trail: dissolved-oxygen-2026-08
Dedicated controlled research is required
Decision at stake: Whether a filter design or measured flow improves animal outcomes instead of merely moving more water.
Primary endpoint: Juvenile retention and whole-colony survival, with nitrogen processing, oxygen and intake injury recorded as mechanisms rather than substitutes.
Minimum design: Replicated complete-system comparisons that vary one filter or verified flow condition while holding mature media, biomass, feeding, habitat and maintenance constant.
Required reporting: Measured in-tank and outlet flow, media and maturity, intake protection, oxygen, nitrogen processing, biomass, feeding, maintenance interventions, independent tanks, life-stage denominators and losses.
Community can contribute: Keepers can document actual measured flow, filter configuration, intake protection and observed failures to improve treatment selection.
Community observations cannot establish: Manufacturer flow ratings and successful individual tanks cannot isolate filter type or create a turnovers-per-hour rule.
Closure rule: Only replicated animal-outcome comparisons with verified hydraulic conditions can support a bounded filter claim.
Search trail: filter-turnover-2026-08
Dedicated controlled research is required
Decision at stake: Which light conditions support observable activity and long-term colony outcomes without confusing spectrum, intensity and habitat.
Primary endpoint: Long-term survival and reproductive output, with time-resolved behavior, molting and growth as separate endpoints.
Minimum design: Replicated intact-aquarium treatments assigning photoperiod, measured animal-level intensity and defined spectrum while holding shelter, plants, algae, feed and temperature constant.
Required reporting: Fixture and spectrum, animal-level irradiance or illuminance method, photoperiod, shading, habitat, temperature, feed, allocation, tank denominators, life-stage counts, blinded observation and missingness.
Community can contribute: Calibrated light and habitat records with standardized time-of-day observations can refine realistic treatments and behavioral questions.
Community observations cannot establish: Fixture names, color appearance and short preference observations cannot establish welfare or a universal photoperiod.
Closure rule: A bounded answer requires independently replicated long-term aquarium outcomes with light dimensions measured rather than inferred from labels.
Search trail: light-environment-2026-08
Dedicated controlled research is required
Decision at stake: Whether a named fish and habitat combination retains adults and recruits juveniles across repeated broods.
Primary endpoint: Adult retention and juvenile recruitment through multiple broods, with injury and welfare outcomes reported.
Minimum design: Replicated shrimp-only and named-fish treatments with standardized habitat, initial animals, feeding and observation, plus prespecified humane stopping rules.
Required reporting: Fish species, size, number and source, shrimp source and life stages, tank allocation, shelter and plants, feed, complete adult, egg, hatchling and juvenile denominators, removals, injuries, deaths, missing animals and stopping events.
Community can contribute: Standardized coexistence observations can identify candidate species, hiding contexts and adverse events for controlled study design.
Community observations cannot establish: Seeing adults coexist does not measure hatchling predation, recruitment, welfare or a universally safe tankmate.
Closure rule: A bounded answer applies only to the named fish, size, density and habitat tested and must include both adult and juvenile outcomes.
Search trail: tankmate-recruitment-2026-08
Dedicated controlled research is required
Decision at stake: Which measured system outcomes define an operating intervention point instead of a shrimp-per-gallon maximum.
Primary endpoint: Multigeneration recruitment, survival and welfare together with resource and waste-processing performance.
Minimum design: Long independently replicated complete systems assigned to density or resource treatments with standardized starting cohorts, habitat, feed, mature filtration and maintenance rules.
Required reporting: Tank volume and usable habitat, initial and repeated life-stage counts, feed and grazing inputs, oxygen, nitrogen processing, maintenance interventions, removals, reproduction, growth, deaths, density changes, allocation and system-level uncertainty.
Community can contribute: Repeated fixed-method life-stage counts and intervention records can improve realistic density trajectories and operational endpoints.
Community observations cannot establish: One stable-looking tank or current head count cannot reveal capacity, hidden mortality, recruitment or the resource that will fail first.
Closure rule: The result must be an operating envelope for the tested system and outcomes, not a universal maximum multiplied from volume.
Search trail: carrying-capacity-2026-08
Specialist-led research is required
Decision at stake: Whether measured ammonia or nitrite exposure can support chronic risk boundaries distinct from acute emergency practice.
Primary endpoint: Survival, growth and reproduction across chronic exposure, with unionized ammonia calculated from measured chemistry where relevant.
Minimum design: Separate replicated ammonia and nitrite treatment series with analytical concentration checks, stable exposure histories, untreated controls, multiple life stages and prospective nonlethal endpoints.
Required reporting: Exact analyte and nitrogen basis, total and unionized ammonia context, concentration verification, pH, temperature, oxygen, chloride and major-ion context, renewal, allocation, vessel and animal denominators, exclusions and uncertainty.
Community can contribute: Keepers can provide method-labelled incident histories and recovery observations that improve emergency questions and realistic exposure selection.
Community observations cannot establish: Accidental events lack controlled dose, duration and comparison and must not be used to derive a safe chronic limit.
Closure rule: Complete reviewable chronic methods and replicated analyte-specific results are required. Abstract values, acute mortality and nominal concentrations do not close the gap.
Search trail: chronic-nitrogen-2026-08
Specialist-led research is required
Decision at stake: Whether GH, KH, pH or conductivity combinations can be called biological optima rather than occurrence or house operating ranges.
Primary endpoint: Multigeneration reproductive output and survival, with growth, molting and offspring condition reported separately.
Minimum design: Factorial, independently replicated ion-defined treatments across more than one documented line and life stage, with acclimation separated from chronic exposure.
Required reporting: Measured calcium, magnesium and other relevant ions, alkalinity, pH method and time series, conductivity, temperature, nitrogen, source line, allocation, independent tanks, complete reproductive denominators and uncertainty.
Community can contribute: Method-labelled source-water and remineralization records can identify common combinations and prevent implausible experimental treatments.
Community observations cannot establish: A GH, KH, pH or TDS number from unrelated tanks cannot isolate ions, prove causation or reveal an optimum.
Closure rule: The term optimum remains unavailable until factorial long-term biological response surfaces are replicated across documented lines.
Search trail: water-parameter-optima-2026-08
Specialist-led research is required
Decision at stake: Which fully specified food and ration supports the complete colony life cycle rather than one short endpoint.
Primary endpoint: Full-life-cycle survival and reproductive output, including offspring performance, with growth, molting and condition reported separately.
Minimum design: Independently replicated complete-formulation and dry-matter-ration comparisons across juvenile, adult male, adult female and offspring stages, with intake and leaching measured.
Required reporting: Stable formula and lot, proximate and relevant micronutrient composition, physical form, dry ration, intake, leaching, background grazing, water chemistry, allocation, tank and life-stage denominators, adverse outcomes and uncertainty.
Community can contribute: Method-labelled feeding-response observations can identify palatability, leftover behavior and practical ration ranges for formal testing.
Community observations cannot establish: Preference, color change or short survival cannot establish nutritional completeness or a universal pellet count.
Closure rule: Only a fully reported replicated life-cycle formulation study can support adequacy for its tested diet and ration; product-name similarity cannot transfer the result.
Search trail: complete-diet-adequacy-2026-08
Specialist-led research is required
Decision at stake: Whether a confirmed agent can be treated at a verified exposure while preserving shrimp welfare across life stages.
Primary endpoint: Confirmed agent clearance and recurrence, paired with survival, behavior, molting and reproduction safety endpoints.
Minimum design: Specialist-confirmed agent trials with untreated and vehicle controls, verified concentration and exposure, independently replicated systems, life-stage safety and prespecified rescue or stopping rules.
Required reporting: Agent identification and confirmation method, product and active ingredient, formulation, measured concentration, water chemistry, exposure and withdrawal, allocation, independent units, complete agent and animal denominators, adverse events, recurrence and professional oversight.
Community can contribute: Clear images, retained specimens and complete prior-treatment histories can improve agent identification and candidate-study selection through qualified channels.
Community observations cannot establish: A visual label, disappearance after dosing or survivor report cannot diagnose the agent, establish efficacy or authorize a dose.
Closure rule: A treatment claim requires confirmed-agent efficacy and shrimp safety for the exact formulation and exposure. Another organism, product or concentration does not inherit the result.
Search trail: treatment-efficacy-2026-08
Specialist-led research is required
Decision at stake: Whether a defined particle history changes individual health or reproduction at an environmentally and aquarium-relevant exposure.
Primary endpoint: Individual growth, fecundity, egg outcomes and survival, with ingestion, egestion, metabolism and microbiome results kept as mechanistic endpoints.
Minimum design: Contamination-controlled, independently replicated particle treatments with verified polymer, shape, size and concentration, realistic source histories and suitable particle-free controls.
Required reporting: Polymer authentication, particle dimensions and shape, preparation, background contamination, measured water and food exposure, aggregation, ingestion, renewal, animal source, allocation, vessel and animal denominators, direct biological endpoints and uncertainty.
Community can contribute: Keepers can document plausible household particle sources and handling histories to improve exposure relevance, without attempting uncontrolled dosing.
Community observations cannot establish: Visible debris, product presence or one exposed tank cannot identify polymer dose, causal harm or a safe concentration.
Closure rule: Each result remains specific to the verified particle and exposure history. Mechanistic change alone does not close the individual-outcome gap.
Search trail: microplastic-exposure-2026-08