Can rainbow sharks live with glowlight tetras?

Verdict

Yes, with care

Yes, with care. Rainbow sharks and glowlight tetras can share a tank, but watch one thing. A grown rainbow shark may treat small glowlight tetras as food, especially at night.

Rainbow shark72–80°F · pH 6.5–7.5

Glowlight tetra74–80°F · pH 6–7.5

What to watch

Watch outA grown rainbow shark may treat small glowlight tetras as food, especially at night.

What works

Both are fine at 74–80°F.
pH 6.5–7.5 suits both.
They use different parts of the tank: rainbow sharks the bottom, glowlight tetras the mid.

Water side by side

The green band is the temperature range both can live in.

The green band is the pH both tolerate.

Size to scale

Adult length in an aquarium. A fish can swallow anything that fits in its mouth, roughly a third to half its own length for predators.

Care at a glance

	Rainbow shark	Glowlight tetra
Temperature	72–80 °F	74–80 °F
pH	6.5–7.5	6–7.5
Adult size	6.0 in	1.5 in
Minimum tank	55 gal	10 gal
Temperament	Semi-aggressive	Peaceful
Swims at	Bottom	Middle
Group	One per tank	Groups of 6+
Diet	Omnivore	Omnivore

Better tank mates for rainbow sharks

All rainbow shark tank mates

Better tank mates for glowlight tetras

All glowlight tetra tank mates

Questions

Can rainbow sharks live with glowlight tetras?

Yes, with care. Rainbow sharks and glowlight tetras can share a tank, but watch one thing. A grown rainbow shark may treat small glowlight tetras as food, especially at night.

What temperature suits both rainbow sharks and glowlight tetras?

74–80 °F. Rainbow sharks need 72–80 °F, glowlight tetras need 74–80 °F.

What size tank do rainbow sharks and glowlight tetras need together?

At least 55 gal, set by the rainbow shark. Add space for each extra fish.