How big does Firefish Goby get?

Firefish Goby reaches an adult standard length of 7–9 cm (excluding the caudal fin). Size the tank for that, not for the juvenile you bring home — the difference is often several times over, and upgrading later costs more than buying once.

What water does Firefish Goby need?

24–27 °C, pH 8.1–8.4, 7–12 dGH, 7–9 dKH, specific gravity 1.023–1.026. That is only 3 °C wide, so stability matters more than hitting a particular number.

What is the smallest tank for Firefish Goby?

At least 60 L, and no shorter than 60 cm. That is the floor for long-term keeping, not for short-term survival: volume buys water stability and length buys swimming room, and neither substitutes for the other. It is not a schooling fish, so a single specimen or a pair is fine.

What is Firefish Goby like to keep?

Temperament: peaceful. Difficulty: beginner. It occupies the middle and is planktivore. Reef safety is "Reef safe".

Can Firefish Goby be kept with its most common tank mate?

The checker returns "Can be kept together". Firefish Goby and Royal Gramma is a well-established pairing. Individual fish still differ; the record says "usually fine", not "guaranteed".

G-01 / 60Marine

Firefish Goby雷达

Nemateleotris magnifica · Ptereleotridae

White body, red tail and a raised first dorsal spine; hovers at its burrow entrance.

Illustration to come

G-01 / 60 · Firefish Goby Nemateleotris magnifica

SpecificationsFish atlas

Name: 雷达
Scientific name: Nemateleotris magnifica
Family: Ptereleotridae
Origin: Indo-Pacific coral reefs
Adult size: 7–9 cm
Temperament: Peaceful
Diet: Planktivore
Water level: Middle
Level: Beginner
Min. tank: 60 L
Min. length: 60 cm
Reef safe: Reef safe

Water requirementsMarine

Temp.24–27 °C

pH8.1–8.4

Salinity1.023–1.026 SG

Alkalinity7–9 dKH

Units: temperature in °C, hardness in German degrees (dGH / dKH), marine salinity as specific gravity at 25 °C, volume in litres. These are the values recorded for the species and do not follow the site unit switcher.

Keeping notes

1Jumps constantly without a lid; a mesh screen is essential.
2Hides for days, then hovers at one burrow mouth; this is normal.
3Timid; damselfish and dottybacks can harass it into starvation.
4Planktivore that readily takes small pellets and frozen copepods.
5Fully reef safe; a fine first fish for a coral tank.

Check a tank mate

Jump straight to the verdict for Firefish Goby against this one — no need to pick it again.

Frequently asked questions

How big does Firefish Goby get?: Firefish Goby reaches an adult standard length of 7–9 cm (excluding the caudal fin). Size the tank for that, not for the juvenile you bring home — the difference is often several times over, and upgrading later costs more than buying once.
What water does Firefish Goby need?: 24–27 °C, pH 8.1–8.4, 7–12 dGH, 7–9 dKH, specific gravity 1.023–1.026. That is only 3 °C wide, so stability matters more than hitting a particular number.
What is the smallest tank for Firefish Goby?: At least 60 L, and no shorter than 60 cm. That is the floor for long-term keeping, not for short-term survival: volume buys water stability and length buys swimming room, and neither substitutes for the other. It is not a schooling fish, so a single specimen or a pair is fine.
What is Firefish Goby like to keep?: Temperament: peaceful. Difficulty: beginner. It occupies the middle and is planktivore. Reef safety is "Reef safe".
Can Firefish Goby be kept with its most common tank mate?: The checker returns "Can be kept together". Firefish Goby and Royal Gramma is a well-established pairing. Individual fish still differ; the record says "usually fine", not "guaranteed".