Labrisomidae

Labrisomidae is a family of blennies, commonly known as combtooth blennies. The family contains approximately 40 species of small, scaleless, benthic fishes found in the tropical and subtropical waters of the eastern Pacific Ocean. These fishes are characterized by their elongated bodies, prominent comb-like teeth, and fused pelvic fins. Their coloration ranges from muted browns and tans to vibrant yellows and oranges, with many species displaying striking patterns and markings.

Quillfin blenny – Gobioclinus filamentosus

Mimic blenny – Gobioclinus guppyi

Longfin blenny – Gobioclinus haitiensis

Palehead blenny – Gobioclinus gobio

Checkered blenny – Starksia ocellata

Goatee blenny – Paraclinus barbatus

Sonora blenny – Malacoctenus gigas

Belted blenny – Malacoctenus zonogaster

Malacoctenus mexicanus

Margarita blenny – Malacoctenus margaritae

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Characteristics

Labrisomidae members exhibit several distinguishing features:

  • Elongated body: They have a slender, elongated body shape, typically measuring between 5 and 20 centimeters in length.
  • Scaleless: The skin is smooth and lacks scales.
  • Comb-like teeth: They possess prominent, comb-like teeth in their jaws, which are used for scraping algae and other food from surfaces.
  • Fused pelvic fins: The pelvic fins are fused into a single, fleshy pad located on the ventral surface of the body.
  • No lateral line: Labrisomidae lack a lateral line system, a sensory canal that runs along the side of the body in many fish species.

Environments

Labrisomidae are primarily found in intertidal and shallow subtidal habitats, including rocky reefs, kelp forests, and tide pools. They are often found in areas with abundant algae, which they feed on. Many species exhibit a preference for specific substrate types, such as rock crevices or sand patches.

Diet

Labrisomidae are primarily herbivorous, feeding on algae, diatoms, and other microalgae. Some species are known to supplement their diet with small invertebrates. Their comb-like teeth are well-suited for scraping algae from surfaces, and their agile bodies allow them to navigate complex environments in search of food.

Reproduction

Labrisomidae reproduce through external fertilization. Males typically create nests, which they defend from rivals and potential predators. Females lay their eggs within the nests, which are then guarded by the male until they hatch.

References