Compatibility brief
Can Penguin tetra live with Serpae Tetra?
Caution. Check the issues below before buying.
Compatibility score
Profile confidence: medium
Order of checkstank volume vs adults → predation mouth gap → temperament / fin nipping → shared water windows.
100L
Combined minimum footprint reference for these two species: about 100L (larger active fish often want more length).
Temperament gap (peaceful vs semi-aggressive) — needs space, structure, and careful observation, not a “drop and forget” mix.
Assessment details
Temperament difference
Top issueSerpae Tetra is semi-aggressive, while Penguin tetra is peaceful. Expect chasing or stress unless the tank is large and heavily structured — monitor closely.
Compatible temperature range
Both fish can comfortably share similar water temperatures.
“Serpae Tetra is semi-aggressive, while Penguin tetra is peaceful”
Temperament difference
Next steps
Concrete changes, not "research more" filler.
- •Provide plenty of hiding spots and visual breaks so Penguin tetra can escape if harassed.
- •Penguin tetra should be kept in a group of at least 6 for best health and behaviour.
- •Serpae Tetra should be kept in a group of at least 8 for best health and behaviour.
- Seriously Fish. Thayeria boehlkei
Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).
- FishBase. Thayeria boehlkei
Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.
- Wikipedia. Thayeria boehlkei
Secondary: general species context; verify all husbandry numbers against a dedicated aquarium care sheet and your test kit, not a single table row.
- Seriously Fish. Hyphessobrycon eques
Supports: aquarium size, water chemistry, temperament and compatibility (primary care reference).
- FishBase. Hyphessobrycon eques
Supports: taxonomy and wild maximum size — translate to tank stocking, not a target number.
- Wikipedia. Hyphessobrycon eques
Supports: general species background and common-name orientation only.
Try this next
Build the full stocking list with Penguin tetra + Serpae 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: high. Checked against several solid care sources that mostly agree.