Signifer Rainbowfish
Also called the spotted blue eye rainbowfish, Signifer is Latin for signal and this refers to the offset fins of the male signifer. These fins expand and compress when males are sparring. The signifer rainbowfish is abundant in Australia and swims in schools in shallow waters, so these fish will tend to school at the upper level of the aquarium. We recommend a school of six or more to establish natural conditions for this aquarium-hardy species.
Quick Facts
| Scientific Name | Pseudomugil signifer |
|---|---|
| Origin | Eastern Australia |
| Care Level | Easy |
| Temperament | Peaceful |
| Adult Size | Up to 4 inches |
| Water Temperature | 72-78°F |
| Water pH | 6.0-7.5 |
| Water Hardness | 2-10 dGH |
FAQ
What is the ideal group size for Signifer rainbowfish?
A school of six or more fish is recommended to establish natural schooling behavior.
Are Signifer rainbowfish aggressive toward other fish?
No, they are peaceful and generally get along well with other non-aggressive species.
Where do Signifer rainbowfish naturally live?
They are native to shallow waters in eastern Australia.
Adrian Dowd –
I bought a group of six Signifer rainbowfish for my 20-gallon tank. They’ve been active and colorful since day one. The fish swim together in the upper layer, which looks very natural. Easy to care for and don’t seem to stress other fish in the tank.
Nicola Martin –
The fish are vibrant and active. I noticed the males’ fins move slightly when they’re near each other, which is a nice detail. I keep them in a well-maintained tank with soft water and gentle lighting. They thrive in groups.
Natalie Mills –
Great addition to a community tank. They don’t fight with other fish and stay calm even during water changes. The blue eyes and spots make them stand out. I’m happy with the school behavior and overall appearance.