Candidate
Black neon tetra
Hyphessobrycon herbertaxelrodi
A hardy, peaceful shoaler when given an 80 cm swim length.
- Adult
- 3–4 cm
- Minimum
- 72 L · 80 cm
- Group
- 8
Condition-led guide · reviewed 2026-07-31
Beginner-friendly schooling fish
Resilient species still need full groups, suitable water and enough length to show natural schooling behaviour.
Selection rules
What made the shortlist
- Buy one complete group rather than several pairs.
- Match the species to tap water and stable temperature.
- Avoid mixing active fin nippers with slow or long-finned fish.
Real photographed species
Options worth researching
Choose the one species that best matches the tank, then make its group larger than the bare minimum where space permits.
Candidate
Lemon tetra
Hyphessobrycon pulchripinnis
A clear community choice in a broad planted setup.
- Adult
- 3.5–4 cm
- Minimum
- 72 L · 80 cm
- Group
- 8
Candidate
Harlequin rasbora
Trigonostigma heteromorpha
A calm, well-understood shoaler for compatible water.
- Adult
- 4–5 cm
- Minimum
- 60 L · 60 cm
- Group
- 8
Candidate
Cherry barb
Puntius titteya
A manageable barb when kept in a proper mixed-sex group.
- Adult
- 4–5 cm
- Minimum
- 60 L · 60 cm
- Group
- 8
Candidate
Zebra danio
Danio rerio
A robust active shoaler for long cooler aquariums.
- Adult
- 4–5 cm
- Minimum
- 60 L · 75 cm
- Group
- 8
Candidate
Bronze corydoras
Corydoras aeneus
A social bottom school for stable tanks with safe substrate.
- Adult
- 6–8 cm
- Minimum
- 75 L · 75 cm
- Group
- 6
Common mismatch
Fish to rule out for this brief
'Beginner' describes relative care difficulty, not permission to skip cycling, quarantine or adult-size planning.
Think again
Tiger barb
Puntigrus tetrazona
Its speed and fin-nipping make companion choice less forgiving.
- Adult
- 6–8 cm
- Minimum
- 100 L · 90 cm
- Group
- 10
Think again
Rummy-nose tetra
Hemigrammus bleheri
It rewards excellent stable water and more experience.
- Adult
- 4–5 cm
- Minimum
- 100 L · 90 cm
- Group
- 8
Think again
Congo tetra
Phenacogrammus interruptus
Its adult size, length and fin care exceed a typical starter tank.
- Adult
- 6–9 cm
- Minimum
- 150 L · 100 cm
- Group
- 8