Engineer Goby

The Engineer goby is also commonly referred to as the Convict Goby. It is in a separate family from the gobies and blennies. Its markings change throughout its life. Consistently, the colors involved are dark blue to black on white. As a juvenile, the markings are horizontal, running the length of the body. With age, they become vertical bands.

It should be kept in a 55 gallon or larger aquarium with a sand covered bottom where it may make burrows. It needs peaceful tank mates and plenty of hiding places. Small groups or pairs tend to do better in an aquarium, but need to be introduced simultaneously to the tank.

The Engineer Goby has been known to spawn successfully in an aquarium setting.

Its diet should consist of a variety of fresh or frozen seafood, brine shrimp, and mysis shrimp. It should be fed at least twice per day.

Minimum Tank Size208.198 Litres
Care LevelModerate
Temperament: Peaceful
Reef Compatible: Yes
Water Conditions72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.020-1.025
Max. Size1'
Colour FormBlack, Blue, White
Diet: Carnivore

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Easy to Care For
Easy to Feed
Peaceful with Others
Reef Safe
Invertebrate Safe

  1. The photo of the juvenile does not do justice to the adult fish that closely resembles an eel. This long slender fish has all of the coolness of an eel without the predatory drawbacks. Very hardy and peaceful, it is a great addition to any reef tank. It will create burrows under rocks from where it will peer out at (like an eel) so good aquascaping is important.

  2. I had an Engineer Goby for over five years, but didn’t know it until after it matured. I bought it as a juvenile, which looks like the picture you have shown, but it burrowed under rocks and I assumed it was gone and dead. Over a year later I saw it come out and eat during the day – it had completely changed! It had now reached a length of over 8″ and the stripes were no longer horizontal, but fat, vertical stripes.

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