Which identified and conditioned leaf litters improve Neocaridina outcomes in home-like systems?

Current boundary

One abstract-level N. davidi study reports leaf choices and normalized consumption. A fully reviewed N. denticulata microcosm study separates direct shrimp contact from fecal contact on one cattail preparation and measures litter breakdown, enzymes and water chemistry, but not intake, dietary adequacy or long-term shrimp outcomes. The taxa, litter species and endpoints differ, and neither record establishes disease benefit or a replacement interval.

What would answer it

Replicated aquarium comparisons across identified litter species and conditioning histories, with a formulated-food baseline, non-consumption mass-loss controls, measured intake, water chemistry and shrimp survival, growth, reproduction and health endpoints.

Answerability brief

Community observations can refine the question

Standardized observations can expose methods, ranges and contrary cases, but they cannot close the causal or optimum claim.

Decision at stake: Whether an identified leaf preparation provides a reproducible dietary, habitat or health benefit without degrading water conditions.

Primary endpoint: Shrimp survival, growth and reproduction, with measured intake, litter mass loss and water chemistry kept distinct.

Minimum design: Replicated aquarium comparisons across authenticated plant species and conditioning histories with formulated-food and non-consumption mass-loss controls.

Required reporting: Plant identity and source, contamination controls, preparation, dry mass, conditioning, intake method, background feed, water chemistry, removal schedule, tank allocation, animal denominators and adverse outcomes.

Community can contribute: Standardized feeding observations can reveal preparation methods, refusal, fouling and contrary cases worth controlled testing.

Community observations cannot establish: A leaf disappearing does not measure ingestion, completeness, disease prevention or safe replacement timing.

Open this question in the complete answerable research agenda.

Current research allocation

Monitor until a named trigger occurs

The current boundary is adequate for today's keeper decision. Do not repeat a search until the declared evidence, review or community trigger occurs.

Why this allocation: Existing guidance can already separate identified litter, preparation, intake and water effects. Casual disappearance reports would not establish benefit.

Next permitted unit: If triggered, draft one observation protocol for one authenticated plant preparation that records refusal, fouling, apparent contact and contrary cases without claiming efficacy.

Activation trigger: A recurring keeper question names the same plant, preparation and claimed endpoint, or a new controlled source materially changes the current boundary.

Open this question in the complete finite research portfolio.

Which direct leaf-litter studies separate preference, consumption, decomposition, water effects and long-term shrimp outcomes?

Taxon names: Neocaridina davidi, Neocaridina heteropoda, Neocaridina denticulata, Neocaridina denticulata sinensis.

Concepts: leaf litter, botanicals, preference, consumption, decomposition, water quality, growth, reproduction.

Search surfaces: publisher and DOI records, Crossref, OpenAlex, Semantic Scholar, institutional repositories, author-upload indexes.

Outcome: One direct cattail-decomposition lead completed method review, while the direct leaf-choice study still needs complete methods. The microcosm supports faster litter breakdown with direct shrimp access under its tested conditions, but mass loss is not measured intake and zero reported mortality is not dietary adequacy. No replicated home-like leaf comparison links an identified treatment to water safety, complete nutrition, growth, reproduction or disease outcomes.

Next scheduled search: February 12, 2027. Also governs: botanical-litter-outcomes