
Elacatinus louisae
Family: Gobiidae Β· Gobies
Also known as: Louise's Goby, Spotlight Cleaner Goby, Louisa's Goby
The Spotlight Goby is a captivating member of the Elacatinus cleaner goby group, named for its distinctive spot-like markings that create a unique pattern among its relatives. At just 1.2 inches maximum length, this species features a slender dark body with a bright yellow lateral stripe and characteristic spotting that distinguishes it from the more uniformly striped Neon and Broadstripe Gobies. This elegant patterning makes the Spotlight Goby a visually distinctive addition to any nano reef.
In the wild, the Spotlight Goby inhabits Caribbean reef slopes and walls, typically associating with sponges and coral formations where it establishes cleaning stations. It removes ectoparasites, dead skin, and mucus from client fish that visit its station, performing a valuable ecological service while obtaining nutrition. This cleaning behavior transfers readily to the home aquarium, where the goby will approach and service willing tankmates.
Captive-bred Spotlight Gobies are available from specialized marine breeders, offering hobbyists hardy specimens that transition smoothly to captive life. This species is ideal for nano reef aquariums, producing negligible bioload while providing active, entertaining behavior. Its completely reef-safe nature and peaceful temperament make it compatible with virtually any community reef setup, provided no predatory species are present that might consume such a small fish.
Spotlight Gobies are cleaner fish that feed on ectoparasites from other fish in the wild, supplemented by micro-crustaceans and zooplankton. In captivity, they readily accept frozen mysis shrimp, brine shrimp, cyclops, and high-quality micro pellets. Feed small amounts several times daily.
The Spotlight Goby is exceptionally peaceful and compatible with all reef-safe species. Its cleaning behavior benefits tankmates. Due to its small size, avoid housing with predatory or highly aggressive fish that might view it as prey.
Check CompatibilitySpotlight Gobies form monogamous pairs and deposit eggs in small crevices or shells. The male guards the clutch until hatching. Captive breeding has been successful for this species. Larvae are planktonic and require live rotifers and copepod nauplii.