goby - ROM2004_1046_2

ROM2004_1046_2

goby

Geography: Pacific Ocean, Central Pacifici Ocean, Society Islands. off northwest coast of Moorea. Longitude: 1495530 W; Latitude: 173100 S
Date: December 10, 1989
Dimensions:
maximum length=16.8 mm
Taxonomy
    • Attributes
    • Objects
    • Taxonomy
    • Kingdom: Animalia
    • Phylum: Chordata
    • Class: Actinopterygii
    • Order: Perciformes
    • Family: Gobiidae
    • Genus: Priolepis
    • SpecificEpithet: ailina
Object number: 60046
Not on view
DescriptionThis small goby has a maximum recorded length of 16.8 mm from the snout tip to the end of the vertebral column. The species is known from a total of 10 specimens, all collected on a ROM expedition to the island of Moorea in the Society Islands in 1989. Its scientific name is derived from the dark bar below the eye, which imparts a plaintive or mournful expression to the fish. The specimens were mostly collected from the reef slope at depths of 20-25 m in areas where a lot of coral rubble was present. Like many small gobies with sharp pointed teeth, this species probably remains on or close to the substrate. In biology, the word substrate refers to any hard, relatively unmoving, structure or surface, which can include sand, rubble, rock, coral, sponges, sea-fans, etc. This fish seems to feed primarily on the very small copepod crustaceans that are common on most coral reefs. Copepods have flattened and narrow bodies, a long abdomen, tail and often long feathery antennae. Two of the ten specimens were parasitised by isopod crustaceans living in the gill chambers. Isopods are characterized by a flattened body with seven pairs of legs (often not true of the many parasitic species); the common woodlouse or pillbug belong to this group.
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