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*This fish is a marine species*

The Bicolour Blenny is suited for the beginner aquarist. It is a peaceful species with a beautiful colour split of blue (anterior half) and orange (posterior half). Males are predominately pink with a light-coloured rectangle on its side and a lavender belly.

This species is native to many areas within the Indo-Pacific region.

Also known as the Two-Coloured Blenny or Two Toned Blenny.


Features of Bicolour Blenny: 

  • Two colour splits
  • Grow up to 10cm
  • Care level: Easy
  • Peaceful


Tank Mate Compatibility:

Here’s a list of some of the best tank mates for your Bicolour Blenny:

  • Large and dwarf Angels
  • Anthias
  • Butterflies
  • Clownfish
  • Damsels
  • Many others

Bicolour Blennies are peaceful fish but have been known to pick at smaller gobies, dart fish and other Blennies.



Bicolour Blennies are herbivores so their diet should consist of vegetable matter including frozen and dried marine and blue-green algae. Blennies will feed off algae in the tank so incorporating mature live rock with algae growth is recommended.




Bicolour Blennies require a minimum tank size of 115L. They generally swim around the bottom of the tank and hide among crevices and rocks. They can be incorporated into reef tank with caution that the tank is not too small and that they are not underfed as they will pick at clams and corals.  

After an Aquarium for your fish? Browse our Aquarium Tank Selection here.


Bicolour Blennies prefer water temperatures between 22°C - 27°C.

Looking for a Heater for your fish? Check all available Tank Heater here.


Replicate natural conditions with artificial lighting (8-10 hours of light every 24 hours.)

Need An Aquarium Light for your tank? Browse our Fish Tank Aquarium Lighting

Filtration & Water Movement:

Bicolour Blennies require good filtration and water quality.

Explore aquarium filtration products here.


Incorporate sand and rocks. Blennies are active diggers so it is best if large items are fixed. Replicate reef habitats and boost biological filtration with coral sand.

View our range of aquarium substrates here.


Decorations for Bicolour Angelfish:

Bicolour Blennies require scattered rocks for perching and hiding. The more porous the better as they will spend most of their time around these rocks.

View our large range of aquarium decorations here.

Additional Information

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Preferred Water Parameters :