Cochu’s Blue Tetra (Boehlkea fredcochui) – Blue King Tetra
Also known as the Blue King Tetra, this species is an excellent choice for medium to large community aquariums, especially planted setups. It is one of the few freshwater fish with bright blue coloration, typically appearing on the back half of the body. The rest of the body is nearly transparent, with pink coloration often found at the base of the tail. Males tend to display more vivid markings than females.
| Species | Boehlkea fredcochui |
|---|---|
| Common Name | Cochu’s Blue Tetra / Blue King Tetra |
| Origin | South America |
| Size (adult) | 1.5 inches (3.8 cm) |
| Water Temperature | 72–78°F (22–26°C) |
| Water pH | 6.0–7.5 |
| Water Hardness | 2–10 dGH |
| Compatibility | Community fish; avoid with very aggressive species |
| Feeding | Varied diet: flakes, pellets, frozen foods |
FAQ
What makes the Cochu’s Blue Tetra unique compared to other tetras?
The Cochu’s Blue Tetra stands out due to its bright blue coloration on the upper half of its body, which is rare among freshwater fish. The body is mostly transparent, with pinkish hues at the tail base. Males typically show more vivid patterns than females.
Is this fish suitable for a planted aquarium?
Yes, it is well-suited for planted aquariums. It does not aggressively uproot plants and is generally peaceful in a community setup.
How should I care for the water parameters?
Maintain water temperature between 72–78°F, pH between 6.0–7.5, and water hardness between 2–10 dGH. Regular water changes and stable conditions are recommended.
Julia Peake –
The blue coloration is stunning in a planted tank. My fish have been active and healthy for over six months. They seem to enjoy the floating plants and the regular feeding schedule. Easy to maintain and peaceful with other community fish.
Jan Smith –
I was excited to add this fish to my 20-gallon tank. The blue markings are very noticeable, especially in the light. They don’t stress other fish and are active but not overly aggressive. Feeding them flakes and frozen foods works well.
Leah Murray –
This tetra is a highlight in my aquarium. The color is vibrant and the fish are calm. I’ve kept them with neon tetras and dwarf corydoras, and they coexist well. Water parameters are stable, and they thrive in a well-planted environment.