Topmouth Gudgeon

Topmouth Gudgeon

Pseudorasbora parva

An omnivorous native that lives anywhere. One of the hardiest species in this game. Good for practicing cycling, but it eats small shrimp.

Temp 2~28°CpH 6.2~8.4GH 3~22Adult 8 cmGroup 5+Min. tank 45 L · 45 cm+ longSwims middlePrice $0.71

How many fit in each tank?

The largest group where none died in 90 days. Tap water · black sand · bacteria starter on day 1 · fish added on day 10 · 25% weekly water changes.

30 cm cubeNot recommended — needs 45 L or more
45 cm standard
5
60 cm standard
8
90 cm standard
13
120 cm standard
15
120 cm large
20
Run a 60 cm standard tank with 8 yourself →

Don’t keep with

The same rules the engine uses for tankmates.

Good tankmates

No eating or bullying either way, with plenty of overlap in temperature and pH. Fish that swim at a different level come first.

The numbers on this page come from the Water Kiwoogi simulator model; real tanks can differ.