Black Neon Tetra tank mates
Tougher than regular neons in moderately hard water. The horizontal bar develops full colour at pH 6.5–7.2. A reliable community schooler.
Common mistakeBuying only four black neons as a 'sample shoal' is how keepers invent a dull, non-schooling handful that never shows the bar pattern in motion. Four fish do not school. Budget for eight or more in at least 60L, or wait until you can.
Each name below opens a pair check with Black Neon Tetra. That check is the decision, not the list itself.
Usually safer companions
Conservative shortlist from this profile. Open a pair page before you buy.
The Black Neon Tetra profile lists Cherry Barb as both safe and a recommended pairing. Cherry Barb schools in groups of 6 or more, so plan room for the whole group rather than one fish.
The Black Neon Tetra profile lists Dwarf Gourami as both safe and a recommended pairing. Dwarf Gourami grows bigger than Black Neon Tetra (8cm vs 4cm). Stock the Black Neon Tetra group large enough to outnumber the Dwarf Gourami, or the smaller fish ends up bullied or off food.
The Black Neon Tetra profile lists Harlequin Rasbora as both safe and a recommended pairing. Harlequin Rasbora schools in groups of 6 or more, so plan room for the whole group rather than one fish.
The Black Neon Tetra profile lists Neon Tetra as both safe and a recommended pairing. Neon Tetra schools in groups of 6 or more, so plan room for the whole group rather than one fish.
Risky or situational
May work with more water, a mature system, or a species-only setup. Read the pair page before you experiment.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Tiger Barb is rated semi-aggressive, so expect chasing, fin damage, or display behaviour directed at Black Neon Tetra. Run the pair checker before stocking.
Fish to avoid with Black Neon Tetra
Predation, aggression, or space rules on this profile. Treat these as poor default mixes.
Jack Dempsey reaches 25cm and is flagged predatory. Black Neon Tetra at 4cm is prey-sized for it. Jack Dempsey needs at least 200L, far above the 60L minimum for Black Neon Tetra. The tank that houses one stresses the other. Jack Dempsey is rated aggressive and Black Neon Tetra is rated peaceful. No community-style planning carries that gap.
Oscar reaches 35cm and is flagged predatory. Black Neon Tetra at 4cm is prey-sized for it. Oscar needs at least 300L, far above the 60L minimum for Black Neon Tetra. The tank that houses one stresses the other. Oscar is rated aggressive and Black Neon Tetra is rated peaceful. No community-style planning carries that gap.
Tank size and groups
- Published minimum for Black Neon Tetra: 60L. Group minimum 6 (schooling).
- Compatibility changes when the tank is too short for turning, too little for a real school, or too warm for one species and not the other. That is why pair checks include tank context, not only temperament.
- Nearest litre hub to this minimum: 60L hub.
Plan before you buy
Start a pair check with Black Neon Tetra, or open a starter plan with the top safer companions in the builder.
Tank hubs: 60L
Related reading
Guides that list other fish with the same trait, so you can plan around the group rather than one row.
- Schooling & group fish →
Plan the group of 6+ before choosing tank mates.
- Beginner-friendly freshwater fish →
Black Neon Tetra is on this list. Hardier options for a first stock.
- Peaceful community fish →
Other peaceful species to shortlist beside Black Neon Tetra.
Filtration & heating
A 60L minimum tank for Black Neon Tetra needs a filter rated for at least 240L/hr turnover and a heater maintaining 22–28°C.
Similar fish (same category)
- Beckford Pencilfish · min 60L
- Bloodfin tetra · min 60L
- Cardinal Tetra · min 60L
- Glowlight Tetra · min 60L
- Green neon tetra · min 60L
- Lemon Tetra · min 60L
- Silver Tip Tetra · min 60L
- X-ray tetra · min 60L
Related (care + temperament)
Black Neon Tetra tank mates — quick answers
- What fish can live with Black Neon Tetra?
- Usually safer companions on this hub include Cherry Barb, Dwarf Gourami, Harlequin Rasbora, Neon Tetra. Open each pair check before you buy — the list is a shortlist, not a guarantee.
- What tank mates should you avoid with Black Neon Tetra?
- Avoid Jack Dempsey, Oscar based on size, temperament, or predation risk on this profile.
- What size tank do Black Neon Tetra need for a community?
- 60L is the planning floor for adult swimming space and bioload. A 73L+ tank is the more comfortable long-term footprint. Length and depth matter as much as raw litres for active or territorial fish.