Compatibility brief
Can Otocinclus live with Rosy Tetra?
Caution. Check the issues below before buying.
Compatibility score
Profile confidence: low
How we decideFishori checks adult size and predation risk, behaviour, water requirements and tank needs before giving a verdict.
80L
Combined minimum footprint reference for these two species: about 80L (larger active fish often want more length).
Assessment details
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.
Compatible temperaments
Both Otocinclus and Rosy Tetra share a peaceful temperament.
Compatible temperature range
Both fish can comfortably share similar water temperatures.
“At least one fish has common trade or ID ambiguity, so the…”
Data or identification limits
Next steps
Concrete changes, not "research more" filler.
- •Otocinclus should be kept in a group of at least 6 for best health and behaviour.
- •Rosy Tetra should be kept in a group of at least 6 for best health and behaviour.
- 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.
- Seriously Fish. Hyphessobrycon rosaceus
Primary: species page covering Amazon range, soft-water requirement, and the sickle-fin dimorphism in adult males.
- Practical Fishkeeping. Rosy Tetra Profile
Secondary: editor coverage of stocking, planted-tank scaping, and the long-fin tank-mate caveat.
Try this next
Build the full stocking list with Otocinclus + Rosy Tetra
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 (Rosy Tetra): Typical care sources — trade names for this fish get mixed up, so verify the ID before you buy.