Info
Very special thanks for the first photo of Elacatinus louisae to Cindy Abgarian, Michigan, USA.
Cindy has taken the photo of the Spotlight goby 12 years ago on the north wall of Grand Cayman, Caribbean, at 85 feet depth.
Classification: Biota > Animalia (Kingdom) > Chordata (Phylum) > Vertebrata (Subphylum) > Gnathostomata (Superclass) > Pisces (Superclass) > Actinopteri (Class) > Perciformes (Order) > Gobioidei (Suborder) > Gobiidae (Family) > Gobiinae (Subfamily) > Elacatinus (Genus) > Elacatinus louisae (Species)
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!