One Spot Blenny

Greek Name: Crossosalarias macrospilus



The One Spot Blenny is also known as Big Spot or as Triplespot Blenny. Its body is a mix of light brown and dark green, with white spots. The belly is light tan to cream hue, while the dorsal fin features some red and yellow accents.
An established 30 gallon or greater aquarium that has multiple levels of swimming and plenty of rocks is an ideal environment. It isn’t typically aggressive unless tankmates appear to have the same form as the One Spot Blenny. It is best to keep one by itself unless it is kept inside a tank that is larger or they are a mated pair. It will perch and sway from rock to rock, looking for small algae to feed on.


It is believed that the One Spot Blenny is best found in well-established aquariums with a lot of algae that it can consume. This diet is supplemented by vegetables, Spirulina, herbivore preparations, and other vegetable matter.


Approximate Purchase Size: 1″ to 2″


Care Level




Color Form

Green, Red, Tan, Yellow



Reef Compatible


Water Conditions

sg 1.020-1.025, 72-78° F, dKH 8-12, pH 8.1-8.4

Max Size



South Asia



Minimum Tank

30 gallons


General information About One Spot

The One Spot Blenny’s physique is mottled green as well as darker brown, with spots of white. The belly is light tan to a cream hue while the dorsal part features highlights of red and yellow. An established medium-sized aquarium or bigger with several swimming levels and plenty of rocks is an ideal environment. This saltwater fish is generally not aggressive unless tankmates have the same design and similar shape to it. It is best to keep one by itself unless it is kept within a bigger tank, and the two form a pair. It will perch and sway between live rock looking for microalgae that it can consume.

Additional information


Large, Medium, Small

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