Compatibility brief
Can Amano Shrimp live with Otocinclus?
Often a workable match in a suitable, well-run tank. Still verify behaviour in your setup.
Compatibility score
Profile confidence: low
Order of checkstank volume vs adults → predation mouth gap → temperament / fin nipping → shared water windows.
60L
Combined minimum footprint reference for these two species: about 60L (larger active fish often want more length).
Both are peaceful grazers with little territory overlap: otos work algae on leaves, amanos work film on wood and substrate. The pairing is workable in a mature planted tank with real biofilm. It fails when people expect them to replace water changes or stock them into a brand-new sterile aquascape with nothing to eat.
Assessment details
Known compatible pairing
Both peaceful grazers. Otos work the algae on plant leaves, amanos work the substrate and decor. No territory or feeding conflict in a mature planted setup.
Compatible temperature range
Both fish can comfortably share similar water temperatures.
Data or identification limits
Top issueAt least one fish has common trade or ID ambiguity, so the numbers here may not match the individual in the shop.
“At least one fish has common trade or ID ambiguity, so the…”
Data or identification limits
Next steps
Concrete changes, not "research more" filler.
- •Add both only to established tanks with visible algae or biofilm, and supplement wafers so neither starves when the glass finally goes clean.
- •Otocinclus should be kept in a group of at least 6 for best health and behaviour.
- LiveAquaria. Japonica / Amano shrimp (care profile)
Primary: major retailer invertebrate care page: temperature, pH, tank size, algae use, and tank-mate safety. Copy uses Caridina japonica; current valid name for the hobby Amano is C. multidentata. Treat the care numbers as a practical anchor, not a taxonomic guarantee.
- FishBase. Caridina multidentata
Secondary: current scientific name and range context; compare with invertebrate-keeper guides when breeding or species confirmation matters.
- Seriously Fish. Otocinclus macrospilus (Otocinclus ‘affinis’ / trade oto stand-in)
Primary stand-in: SF profile for O. macrospilus. Shop 'O. affinis'/'otocinclus' labels are often misidentified. Verify the fish against a good key, not a single import sticker.
- FishBase. Otocinclus affinis
Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.
- Wikipedia. Otocinclus affinis
Secondary: general species context; verify all husbandry numbers against a dedicated aquarium care sheet and your test kit, not a single table row.
- FishBase. Otocinclus vittatus
Taxonomy, distribution, and typical max length in natural/wild contexts (cross-check to aquarium import lines).
- Wikipedia. Otocinclus
Encyclopaedia overview; use specialist aquarium sources for your stock's real temperature/pH/footprint needs.
Try this next
Build the full stocking list with Amano Shrimp + Otocinclus
Plan further
Check each species’ mates list, size the glass, then verify the full stock in the builder. Methodology explains how verdicts are produced.
Individual fish vary in personality. Fishori uses conservative hobby rules. Observe any new introduction closely, feed thoughtfully, and keep a quarantine or backup plan. This is not veterinary advice.
Profile data confidence: medium. Driven by the lower-confidence profile (Amano Shrimp): Typical care sources — trade names for this fish get mixed up, so verify the ID before you buy.