The tubeshoulders are a family, Platytroctidae, of ray-finned fish belonging to the order Alepocephaliformes. They are found throughout the world, except for the Mediterranean Sea. Tubeshoulders live at moderate depths of 300 to 1,000 m (980 to 3,280 ft), and some have light-producing organs. They are generally small to medium fish, ranging from 9 to 33 cm (3.5 to 13.0 in) in length.[2]
^Přikryl, T.; Carnevale, G. (2019). "An Oligocene tubeshoulder (Teleostei, Alepocephaliformes) from the Central Paratethys (Czech Republic): the first skeletal record for the family Platytroctidae". Journal of Vertebrate Paleontology. 39 (6): e1719123. Bibcode:2019JVPal..39E9123P. doi:10.1080/02724634.2019.1719123. S2CID216207889.