Aquarium Fish
Aquarium fish compared — adult size, tank requirements, temperament with tank mates, water conditions, diet and how hard each is to keep.
6 entries
Betta Fish (Siamese Fighting Fish)
Jewel-bright and surprisingly intelligent — the fish that watches you back.
- Size
- Small
- Weight
- 0.1–0.2 oz (2–5 g)
- Lifespan
- 3–7 years
Goldfish
Not a bowl fish, not a starter pet, and capable of outliving your dog.
- Size
- Medium
- Weight
- 0–1 lb (0.1–0.5 kg)
- Lifespan
- 10–25 years
Neon Tetra
A shoaling fish that only makes sense in numbers — and looks extraordinary when kept properly.
- Size
- Small
- Weight
- 0 oz (1 g)
- Lifespan
- 5–8 years
Guppy
Colourful, hardy and prolific — the beginner fish that will fill your tank if you let it.
- Size
- Small
- Weight
- 0–0.1 oz (1–2 g)
- Lifespan
- 2–4 years
Bronze Corydoras
A peaceful, bottom-dwelling catfish that loves company.
- Size
- Small
- Weight
- 0.1–0.2 oz (2–5 g)
- Lifespan
- 5–10 years
White Cloud Mountain Minnow
A hardy, cool-water shoaling fish — no heater required.
- Size
- Small
- Weight
- 0–0.1 oz (1–2 g)
- Lifespan
- 5–7 years