Back to species
Species profile

Furcatus Rainbowfish

Pseudomugil furcatus

Furcatus Rainbowfish (Pseudomugil furcatus) is a schooling community species for a cycled 20+ gallon freshwater aquarium. Plan for about 2 inches as an adult, 74-80°F water, pH 7-8.2, and moderate care. Keep a group of at least 6; larger groups often behave more naturally when the tank has room.

FlashyModerate care
Furcatus Rainbowfish, a flashy 2 inch aquarium species for 20+ gallon tanks
20 galMinimum tank
2 inAdult size
6Schooling minimum
74-80°FTemperature

Water Range

pH
7-8.2
GH
8-20 dGH
KH
4-12 dKH

Behavior

Temperament
Peaceful
Fin nipping
0/5
Territory
0/5

Diet and Care

Diet
omnivore/micro-predator
Diet difficulty
2/5
Care difficulty
3/5

Planning Notes

Moderate care needs; may require mature grazing surfaces or supplemental fresh/frozen foods.

This species may need live, frozen, fresh, or otherwise specialized foods.

live or fresh foodsmall foodsoxygen richfry predatorsafe with adult shrimp

People also bought

Fish that pair well with Furcatus Rainbowfish

These matches are starting points with overlapping water ranges and lower behavior risk. Always check the full stocking plan, tank size, and group counts before buying.

Can I keep this?

Run Furcatus Rainbowfish through the checker with your tank size, cycle status, water, group count, and tankmates before buying.

Check my tank
Compare this species

Put Furcatus Rainbowfish beside another profile to compare water range, size, diet, schooling needs, and behavior.

Open comparison
Will plants work?

Match Furcatus Rainbowfish against aquarium plants for nibbling, uprooting, cover, flow, and water-range flags.

Open plant match
Ask about my setup

Ask Advisor how Furcatus Rainbowfish fits with your current tank, recent logs, plants, and livestock.

Ask Advisor
View native range

Open the origins map to see reviewed native-range coordinates and regional context for Furcatus Rainbowfish.

Open origins map

From keepers

Loading…