← All species
Purple firefish (Nemateleotris decora)
AI illustration, not an ID reference

Purple firefish

Nemateleotris decora

FishSaltwater

Care level
Easy
Temperament
Peaceful
Reef safe
Yes
Recommended tank
100 L
Maximum size
9 cm
Temperature
24–27 °C
pH
8–8.4
Diet
Planktivore

Care at a glance

The purple firefish has a white front that shifts through purple into fiery red towards the rear, with a tall, pointed first dorsal fin that it flicks nervously up and down. It hovers just above the rock in the current, picking plankton from the water.

At the slightest disturbance it darts into a crevice, and that is exactly why a closed lid is necessary: startled, it will just as readily jump out of the tank. Keep it alone or as an established pair, since two unpaired fish of similar size usually will not tolerate each other.

Good to know

  • Known jumper — cover the tank

Related species

Keep Purple firefish in the BlubHub app

Add this species to your inhabitants, with count and photos, and see the care info next to your own water values, target bands and reminders. Free, no account, everything on your own device.

More about the app →

Values are mainstream hobbyist guidance, not gospel — always watch what your own animals need.