Ülar Tikk, Estland
Info
Cryptocentrus nigrocellatus lives in symbiosis with various species of the genus Alpheus
In the sea, silty-sandy substrates with small boulders or large pieces of rubble are preferred as a building ground for a common cave.
Keeping in an aquarium without crayfish is not recommended, but can sometimes be successful without crayfish, although the species should not be associated with larger crayfish and other bottom-dwelling fish, as this combination will lead to disturbance of the symbiotic animals and observations are becoming increasingly rare.
Cryptocentrus nigrocellatus has 7 dorsal fin spines.
The body has 3 or 4 rows of white spots on it, all fins are transparent with dark spots or bars forming oblique lines.
A large ocellus with a white border can be seen between the posterior edge of the preopercel and the operculum.
The caudal fin is rounded,
The body color is dark brown to blackish with white spots and dots on the snout and the tips of the jaws.
The ventral side is white and speckled, the pelvic fins are united by the presence of a frenulum.
Synonym: Mars nigrocellatus Yanagisawa, 1978
We would like to thank Ülar Tikk for the first photo of Cryptocentrus nigrocellatus!
Jumping guard
A jumping guard prevents (nocturnal) fish from jumping out.
Wrasses, blennies, hawkfishs and gobies jump out of an unprotected tank in fright if their night rest is disturbed, unfortunately these jumpers are found dried up in the morning on carpets, glass edges or later behind the tank.
https://www.korallenriff.de/en/article/1925_5_Jump_Protection_Solutions_for_Fish_in_the_Aquarium__5_Net_Covers.html
A small night light also helps, as it provides the fish with a means of orientation in the dark!
In the sea, silty-sandy substrates with small boulders or large pieces of rubble are preferred as a building ground for a common cave.
Keeping in an aquarium without crayfish is not recommended, but can sometimes be successful without crayfish, although the species should not be associated with larger crayfish and other bottom-dwelling fish, as this combination will lead to disturbance of the symbiotic animals and observations are becoming increasingly rare.
Cryptocentrus nigrocellatus has 7 dorsal fin spines.
The body has 3 or 4 rows of white spots on it, all fins are transparent with dark spots or bars forming oblique lines.
A large ocellus with a white border can be seen between the posterior edge of the preopercel and the operculum.
The caudal fin is rounded,
The body color is dark brown to blackish with white spots and dots on the snout and the tips of the jaws.
The ventral side is white and speckled, the pelvic fins are united by the presence of a frenulum.
Synonym: Mars nigrocellatus Yanagisawa, 1978
We would like to thank Ülar Tikk for the first photo of Cryptocentrus nigrocellatus!
Jumping guard
A jumping guard prevents (nocturnal) fish from jumping out.
Wrasses, blennies, hawkfishs and gobies jump out of an unprotected tank in fright if their night rest is disturbed, unfortunately these jumpers are found dried up in the morning on carpets, glass edges or later behind the tank.
https://www.korallenriff.de/en/article/1925_5_Jump_Protection_Solutions_for_Fish_in_the_Aquarium__5_Net_Covers.html
A small night light also helps, as it provides the fish with a means of orientation in the dark!
