Amblyeleotris
Amblyeleotris is a genus of fish in the family Gobiidae found throughout the Indo-Pacific region. This is the largest genus of the shrimp gobies or prawn gobies, so-called because of their symbiotic relationship with certain alpheid shrimps. The shrimp excavates and maintains a burrow used by both animals while the goby, which has far superior eyesight, acts as a lookout for predators. The shrimp maintains almost constant contact with the fish with an antenna. Fossil Amblyeleotris otoliths have been found together with alpheid shrimp remnants from as early as late early Miocene (Burdigalian) suggesting a possible mutualistic association since then. The species of Amblyeleotris vary considerably in size from less than 30 mm to almost 200 mm standard length. Species There are currently 39 recognized species in this genus: Amblyeleotris arcupinna Mohlmann & Munday, 1999 (Arc-fin shrimpgoby) Amblyeleotris aurora (Polunin & Lubbock, 1977) (Pink-bar prawngoby) Amblyeleotris bellicauda J. E. Randall, 2004 Amblyeleotris biguttata J. E. Randall, 2004 (Twin-spot shrimpgoby) Amblyeleotris bleekeri I. S. Chen, K. T. Shao & J. P. Chen, 2006 Amblyeleotris callopareia Polunin & Lubbock, 1979 (Beautiful-cheek shrimpgoby) Amblyeleotris cephalotaenia (Y. Ni, 1989) Amblyeleotris delicatulus J. L. B. Smith, 1958 Amblyeleotris diagonalis Polunin & Lubbock, 1979 (Diagonal shrimpgoby)