GloFish tetra care

Water temperature

72–80°F

Glofish do best at 72–80°F and pH 6–7.5. Plan on 15 gallons or more. Good tank mates include neon tetras, corydoras, sparkling gouramis.

A colour line of the black skirt tetra, with the same fin-nipping habit.

Gymnocorymbus ternetzi (GloFish)

pH

6–7.5

Minimum tank

15 gal

Adult size

2.5 in

Temperament

Semi-aggressive

Group

Groups of 6+

Lifespan

3–5 years

Swims at

Middle

Diet

Omnivore

Best tank mates

• Neon tetraYes
• CorydorasYes
• Sparkling gouramiYes
• Bolivian ramYes
• OtocinclusYes
• Kuhli loachYes
• Pictus catfishYes
• Tiger barbYes
• Blue gouramiYes
• Paradise fishYes
• Mystery snailYes
• Upside down catfishYes

Full glofish tetra tank mate chart: 59 yes, 23 with care, 16 no

GloFish tetra water compared

Fish to keep away from glofish

• Betta Glofish nip fins, and the long fins of bettas are an easy target.
• Axolotl Axolotls are coldwater animals (60–66°F); glofish need 72–80°F. No temperature suits both.
• Guppy Glofish nip fins, and the long fins of guppies are an easy target.
• Angelfish Glofish nip fins, and the long fins of angelfish are an easy target.
• Goldfish Goldfish are coldwater animals (60–74°F); glofish need 72–80°F. They overlap only at 72–74°F, the edge of both ranges.
• Oscar An adult oscar eats fish that fit in its mouth, and at 2.5 inches glofish do.
• Bichir An adult bichir eats fish that fit in its mouth, and at 2.5 inches glofish do.
• Black ghost knife An adult black ghost knife eats fish that fit in its mouth, and at 2.5 inches glofish do.

More tetras and characins

• Neon tetra72–79°F
• Ember tetra73–84°F
• Congo tetra73–82°F
• Rummy nose tetra75–84°F
• Cardinal tetra76–84°F
• Black skirt tetra70–80°F
• Serpae tetra72–79°F
• Silver dollar75–82°F