Costello Tetra

Hemigrammus hyanuary

Costello Tetra is a peaceful middle-to-top swimmer. Keep in a school of 10+.

PeacefulMiddle to top swimmerKeep in a school of 10+Beginner – Intermediate

Save this fish or add it directly to one of your aquariums.

Quick facts

Adult size
≤ 1.6" (≤ 4 cm)
Aquarium size
18 US gal (70 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
Care level
Beginner – Intermediate
Temperament
Peaceful
Swimming zone
Middle to top swimmer
Temperature
73–79°F (23–26°C)
pH
6–7
GH
2–15 dGH
Diet
Omnivore
Lifespan
up to 5 years
Group behavior
Keep in a school of 10+

Care requirements

Care level: Beginner – Intermediate.

Lifespan: up to 5 years.

Aquarium size and space needs

Minimum aquarium size: 18 US gal (70 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length. Plan the layout and stocking within that limit.

Water parameters

Suitable water: temperature 23–26 °C, pH 6–7, GH 2–15 dGH.

Temperament and compatibility

Costello Tetra is peaceful and suits calm community fish.

Keep in a school of 10+.

Swimming zone and behavior

This fish uses the middle to upper part of the aquarium, so leave enough open swimming space for movement and feeding. Keep in a school of 10+.

Feeding

As an omnivore, Costello Tetra should receive a varied diet rather than one repeated food type.

Before adding this fish

  • Plan for an aquarium of 18 US gal (70 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length.
  • Make room for its social group.
  • Avoid aggressive or highly competitive fish.
  • Keep in a school of 10+.
  • Offer a varied diet that matches this species.

Natural habitat and origin

Origin: Peru, Brazil.

Similar fish profiles

Use these profiles to compare fish with similar care level, size, temperature range, or swimming behavior.

Black-belt Tetra Hemigrammus kuroobi Same genus Same family Similar care level Beginner – Intermediate ≤ 2" (≤ 5 cm) 75–82°F (24–28°C) Black Neon Tetra Hyphessobrycon herbertaxelrodi Same family Similar care level Same temperament Beginner – Intermediate ≤ 1.6" (≤ 4 cm) 68–79°F (20–26°C) Blue Purple Emperor Tetra Inpaichthys kerri Same family Similar care level Same temperament Beginner ≤ 1.6" (≤ 4 cm) 72–79°F (22–26°C) Blue Flash Glass Tetra Heterocharax vigulatus Same family Similar care level Same temperament Beginner – Intermediate ≤ 1.6" (≤ 4 cm) 72–82°F (22–28°C) Blue-purple Croaking Tetra Mimagoniates barberi Same family Similar care level Same temperament Beginner – Intermediate ≤ 1.6" (≤ 4 cm) 68–75°F (20–24°C) Arowana Tetra Gnathocharax steindachneri Same family Similar care level Same temperament Beginner – Intermediate ≤ 2" (≤ 5 cm) 72–79°F (22–26°C)

FAQ

How large does Costello Tetra get?

Costello Tetra reaches ≤ 1.6" (≤ 4 cm).

What aquarium size does Costello Tetra need?

Use an aquarium of at least 18 US gal (70 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length.

Is Costello Tetra peaceful?

Yes. Costello Tetra is recorded as peaceful and is best planned with calm community fish that do not harass it or dominate the feeding area.

What temperature is suitable for Costello Tetra?

Keep it between 23 to 26 °C.

Should Costello Tetra be kept alone or in a group?

Costello Tetra: Keep in a school of 10+.

Scroll to Top