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Acentrogobius janthinopterus



Acentrogobius janthinopterus, synonyms: Gobius janthinopterus, Amoya janthinopterus, Cression janthinopterus distributed from Sumatra through Indonesia to the Philippines, Australia and the western Pacific. The fish can be found in shallow waters in mangroves with muddy bottoms.

Acentrogobius janthinopterus has an elongated body of gray-blue coloration with maroon and yellowish spots. The sides of the head and the base of the pectoral fins are covered with interrupted horizontal dark bands. The fins are somewhat transparent, and the dorsal and caudal fins have a sparse pattern with dark spots and speckles. The lower half of the sides are decorated with small and larger green spots. The head is large with high-set eyes. Males are larger than females, they have elongated dorsal fin tips. The maximum size of fish reaches 12 cm.

Acentrogobius janthinopterus

To keep Acentrogobius janthinopterus suitable aquarium volume of 120 liters. Perhaps content in a common aquarium with other species of peaceable fish. Fish are territorial, with the fish of his family may show signs of aggression, so the aquarium is desirable to contain no more than one goby. Use fine river sand as a substrate. The soil must be silted.  This fish is a good cleaner, sifting the sand through the gills, it filters the fine sediment resulting in both the ground and the water in the aquarium will be clean. Plants in the aquarium can not plant, but if you do decide to place them, you should choose the types that can grow in brackish water.

Bullfin is bottom-living and if you plan to contain it in conjunction with other fish, you should select their species that occupy the middle and upper layers of water.

Water parameters: temperature 23-29° C, hardness dH 10-22°, pH 7,6-8,0. It is desirable to make the water slightly brackish, diluting it with table salt in a concentration of 2 g per 1 liter of water. Requires filtration, aeration and a weekly change of ¼ of the aquarium water with fresh water.

Acentrogobius janthinopterus

The menu of fish in the aquarium consists of live and frozen artemia, cyclops, moths. A vegetable supplement to the food is desirable. Do not refuse gobies and dry pellets and flakes. The feed is given 1-2 times a day.

Reproduction

Acentrogobius janthinopterus does not breed under aquarium conditions. Also, we have no information on the breeding of these fish in the wild.

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