Firefish Care Guide

Scientific Name: Nemateleotris magnifica
Origin: Indo-Pacific
Adult Size: 3”
Difficulty Level: Easy
Diet: Carnivorous
Min. Tank Size: 10 gallons
Compatibility: Peaceful, sometimes shy
Reef Safe: Yes

Firefish are members of the Family Gobiidae, meaning they are a type of goby. They are peaceful fish that grow to 3” in length. Firefish can be shy at first, but once they adjust to their new surroundings they stay out in the open, especially with plenty of available habitat such as live rock. Avoid keeping them with aggressive fish such as damsels as they may stay hidden. The most important thing to know about Firefish is that they are accomplished jumpers and a secure lid is mandatory! There is some debate as to whether they should be kept individually or can be maintained in small groups. Individual experiences vary, but if you want to keep more than one, an aquarium of 75 gallons or larger is recommended. Firefish are carnivores and should be fed a varied, meat-based diet.


Temperature: 74°- 80° F
Specific Gravity: 1.020 – 1.025
pH: 8.0 – 8.4
KH: 8° - 12°
Nitrate: < 10 ppm
Regardless of your experience level, always research any animal before purchasing.