Congrogadus. I'm not familiar enough with individual species in this genus to say which species. Despite it's common name, this is not an eel at all - it is a much closer relative of damselfishes, dottybacks and cichlids. Many taxonomies place this genus (and a number of closely related genera) as a subfamily within the family Pseudochromidae, the dottybacks, but recent papers suggest this is erroneous and these genera are better placed in an independent family, Congrogadidae.
@DaLilFishie Putting them in their own separate family would seem better than lumping with the dissimilar dottybacks, that's for sure. If only we could get a better common name for the species that is more clear about what it actually is...
@Great Argus dissimilar indeed, and it seems relatively distantly related too - congrogadids seem to be consistently placed in a clade with Mugilidae (mullets) and Ambassidae (glassfishes) in genetic studies, quite distant from Pseudochromidae (albeit within the same order, Cichliformes sensu Near & Thacker). Their placement in Pseudochromidae was based on morphological taxonomy, which as mammal enthusiasts will know often draws incorrect conclusions!
