Penguin tetra - Thayeria boehlkei

Penguin Tetra (Thayeria boehlkei) is a peaceful and active schooling fish recognized by its sleek silver body, black lateral stripe, and distinctive penguin-like markings. It adds dynamic movement and elegance to community aquariums.

Description:

Common Name: Penguin Tetra

Scientific Name: Thayeria boehlkei

Family: Characidae

Size: 2–2.5 inches

Temperament: Peaceful

Difficulty: Easy

Native Region:

South America (Rio Negro and Amazon basins, Brazil)

Aquarium Setup:

Tank Size: Minimum 20 gallons

Temperature: 73–81°F

pH: 6.0–7.5

Hardness: Soft to moderately hard

Decor: Planted aquarium with open swimming space and gentle filtration

Additional Tips:

• Schooling fish: Keep in groups of 6 or more for natural behavior

• Tankmates: Ideal with other peaceful community fish

• Diet: Omnivorous – flakes, micro pellets, and small frozen foods

• Behavior: Active mid-level swimmer that adds contrast and movement to the tank