Dr. Mark V. Erdmann (Conservation International Advertisement), Indonesien
Info
A new gobiid species, Sueviota minersorum, is described from 4 specimens, 17.9–23.2 mm SL, collected from inside Theonella tube sponges at 20–22 m depth.
This cryptic species was only observed in close association with a particular species of tube sponge that is provisionally assigned to the genus Theonella. Using an underwater lightsource, the goby could be seen peering out from the darkened recesses of the exhalent pore of the sponge, but would quickly retreat deep into the canal structure. This behavior made it difficult to photograph in situ or to capture by hand, even with the use of anesthetic clove oil. The sponge was commonly observed on current-exposed walls and steep slopes in the 15-25 m depth range; a visual survey of approximately 200 individual sponges revealed only 10 of this new species
Citation: Greenfield, D.W., Erdmann, M.V. & Utama, I.V. (2019) Sueviota minersorum, a new species of sponge- dwelling goby (Teleostei: Gobiidae) from Misool, Raja Ampat Islands, Indonesia. Journal of the Ocean Science Foundation, 33, 79–88.
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!
This cryptic species was only observed in close association with a particular species of tube sponge that is provisionally assigned to the genus Theonella. Using an underwater lightsource, the goby could be seen peering out from the darkened recesses of the exhalent pore of the sponge, but would quickly retreat deep into the canal structure. This behavior made it difficult to photograph in situ or to capture by hand, even with the use of anesthetic clove oil. The sponge was commonly observed on current-exposed walls and steep slopes in the 15-25 m depth range; a visual survey of approximately 200 individual sponges revealed only 10 of this new species
Citation: Greenfield, D.W., Erdmann, M.V. & Utama, I.V. (2019) Sueviota minersorum, a new species of sponge- dwelling goby (Teleostei: Gobiidae) from Misool, Raja Ampat Islands, Indonesia. Journal of the Ocean Science Foundation, 33, 79–88.
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!
