HomeMarine aquarium fishGobies, blennies & dottybacksBluebanded goby Bluebanded goby (Lythrypnus dalli) Scientific name: Lythrypnus dalli Gilbert, 1890 The Bluebanded goby (Lythrypnus dalli) is a marine fish of the family Gobiidae. In the aquarium it needs water at 18–22°C (64–72°F). Native range: Eastern Pacific, Gulf of California to Ecuador and north of Per?. Bluebanded goby care at a glanceTemperature18–22°C (64–72°F) BiologyFound usually in open rocky areas but retreats to crevices or holes or hides among spines of sea urchins when threatened. Territorial. Sits on exposed rock surfaces near a hole or crevice. Feeds mainly on small crustaceans. Oviparous. Males guard the eggs which are found attached to the walls of brood chamber. Female deposits oblong eggs in empty shells; male guards them. Often found with Lythrypnus zebra.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLythrypnus dalliFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length6.4Depth range0–76 m (0–249 ft)EnvironmentMarine; demersal; depth range 0 - 76 mClimateSubtropicalDistributionEastern Pacific: Gulf of California to Ecuador and north of Per?.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More gobies, blennies & dottybacksYellowhead jawfishOpistognathus aurifronsFire gobyNemateleotris magnificaYellow prawn-gobyCryptocentrus cinctusPersian blennyEcsenius midasBluegold gobyLythrypnus spilusZebra gobyLythrypnus zebraSee all gobies, blennies & dottybacks SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026