Common name: Yellownose goby

General information

Randall's Goby, scientifically known as Elacatinus randalli, is a small, colorful fish that is popular among reef aquarium enthusiasts. This species is part of the Gobiidae family, which is known for its hardiness and adaptability in captivity. The most distinctive feature of Randall's Goby is its bright yellow head, which contrasts sharply with its white body adorned with thin horizontal blue lines.

Care

Randall's Goby is an excellent choice for both novice and experienced aquarists due to its small size and peaceful nature. It thrives in well-established aquariums with plenty of live rock for hiding and hunting microfauna. A sandy substrate is also beneficial for their natural burrowing behavior. They are omnivores and will accept a variety of foods, including frozen and live brine shrimp, mysis shrimp, and high-quality flake and pellet foods.

Reproduction

In the wild, Randall's Gobies form monogamous pairs and are known to spawn within the safety of their burrows or crevices. In the aquarium, breeding can occur if a compatible pair is established. The male typically guards the eggs until they hatch.

Symbiosis

Randall's Goby is known for its symbiotic relationship with certain species of pistol shrimp, such as Alpheus bellulus. The shrimp maintains a burrow in the sand where both the goby and shrimp reside. The goby acts as a lookout for predators while the shrimp works on the burrow. This mutualistic relationship provides safety for both species.

Habitat

Elacatinus randalli is native to the Western Atlantic, specifically around the Caribbean Sea and the northern coast of South America. They are typically found in shallow reefs and seagrass beds, often associating with rubble and coral outcrops.