Trout Perches, Pirate Perches, And Cavefishes

Percopsis guttatus. Agassiz

Chologaster Agassizii. Dorsal, lateral, and ventral views

Aphredoderus sayanus (Gillams). Pirate Perch. Illinois River.

Blind Cave-fish, Typhlichthys subterraneus Girard. Mammoth Cave, Kentucky.

Columbia transmontana. Eigenmann & Eigenmann

Figure 4.Comparative image of two similarly sized individuals of both species of Amblyopisis. Amblyopsis hoosieri, holotype, INHS 106675, 75.1 mm SL, Bronson’s Cave, Lawrence Co., Indiana (A); a specimen of Amblyopsis spelaea (YPM ICH 25294) of similar SL (67 mm SL) showing the more elongate and sculpted (versus plump) body, pointed fins, less prominent myomeres and more prominent papillae on the body (B).

Chologaster Papilliferus. Dorsal, lateral, and ventral views

Pirate Perch, Aphredoderus sayanus (Gilliams). Illinois River.

Troglichthys Rosae.

Oregon Trout-perch, Columbia transmontana Eigenmann. Umatilla River, Oregon.

Figure 5.Photograph of a paratype of Amblyopsis hoosieri in life, YPM ICH 25304, 60.7 mm SL. Photograph by M.L. Niemiller.

Troglichthys Roser. Lateral View and Dorsal and Ventral View of Head

Figure 6.Illustration of Amblyopsis hoosieri based on the holotype, INHS 106675, 75.1 mm SL. Illustration by Nathan Coussou.

Figure 7.Cleared and stained image of the head of Amblyopsis hoosieri. Note lack of eye or a clearly defined bony orbit. Specimen is a paratype from INHS 40424, 71.3 mm SL.

Figure 2.Distribution of Amblyopsis spp., Amblyopsis spelaea and Amblyopsis hoosieri, in the Mitchell Plain and Crawford-Mammoth Uplands of Indiana and Kentucky.