Engineer Goby Fish

The Engineer Goby, *Pholidichthys leucotaenia*, is a fascinating and unique fish that will add intrigue to any appropriately sized aquarium. Despite its common name, it is not a true goby but belongs to its own family, Pholidichthyidae. Its elongated, eel-like body is black with striking white or yellow stripes running horizontally from head to tail. As juveniles, these stripes are typically solid, but as they mature, the stripes may break into a series of spots.

A minimum aquarium size of 50 gallons is recommended to provide ample space for this active burrower. The Engineer Goby is known for its elaborate burrowing behavior, creating complex tunnel systems within the substrate and live rock. Providing a deep sand bed (at least 3-4 inches) and stable rockwork is essential for their well-being. They are generally peaceful towards other fish but may become territorial with conspecifics unless kept in a very large aquarium with multiple hiding places. They are considered reef safe, as they do not typically bother corals or invertebrates.

In the wild, Engineer Gobies are micro-predators, feeding on small invertebrates. In the aquarium, they readily accept a varied diet of meaty foods. Offer a mix of high-quality frozen foods such as mysis shrimp, brine shrimp, and enriched prepared foods designed for carnivorous fish. They should be fed multiple times a day, especially when young.

Engineer Gobies can reach a size of up to 12 inches in captivity. While breeding in captivity is possible, it is not commonly achieved by hobbyists. There are no readily apparent visual differences between males and females.

Quick Facts

• Scientific Name: Pholidichthys leucotaenia
• Care Level: Beginner
• Temperament: Peaceful
• Diet: Carnivore
• Reef Compatibility: Reef Safe
• Region of Origin: Indo-Pacific
• Maximum Adult Size: 10"
• Recommended Tank Size: 30 gallons