HomeMarine aquarium fishGobies, blennies & dottybacksPersian blenny Persian blenny (Ecsenius midas) Scientific name: Ecsenius midas Starck, 1969 The Persian blenny (Ecsenius midas) is a marine fish of the family Blenniidae that grows to about 12.7 cm (5 in). It is moderate to keep and peaceful, suits community aquariums and needs a tank of at least 150 L (40 US gal), water at 22–26°C (72–79°F) and a pH of 8.1–8.4. Native range: Indo-Pacific. Persian blenny care at a glanceCare levelModerateTemperamentPeacefulCommunity tankExcellentAdult size12.7 cm (5 in)Minimum tank150 L (40 US gal)Temperature22–26°C (72–79°F)pH8.1–8.4Hardness8–12 dGH (143–214 ppm)DietOmnivore. Accepts flakes, frozen foods and live foods. BiologyDorsal spines (total): 13 - 14; Dorsal soft rays (total): 19-21; Anal spines: 2; Anal soft rays: 20 - 23. Golden orange in color; black spot around anus; anterior part of dorsal fin with narrow dark margin. Indonesian form grey or greenish to golden-yellow. Tail long in adults.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEcsenius midasFamilyBlenniidae (Combtooth blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length13.0Depth range2–40 m (7–131 ft)EnvironmentMarine; reef-associated; depth range 2 - 40 mClimateTropicalDistributionIndo-Pacific: Gulf of Aqaba and southeast coast of Africa to the Marquesan Islands.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More gobies, blennies & dottybacksYellow prawn-gobyCryptocentrus cinctusFire gobyNemateleotris magnificaYellowhead jawfishOpistognathus aurifronsBrown coral blennyAtrosalarias holomelasHairtail blennyXiphasia setiferSpotty blennyLaiphognathus multimaculatusSee all gobies, blennies & dottybacks SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0. Aquarium care parameters compiled, checked and converted to metric and imperial units by Guppies.za.net.Last updated 28 September 2026