Week 6: Euteleostei Ostariophysi Cypriniformes Characiformes Siluriformes

~adipose fin Siluriformes catfishes no scales ~bony plates spinous dorsal, pectoral rays ~ epidermal venom ~ 1st ray locks 2nd Figure 18.4

Batrochoglanis villosus SA bumblebee catfishes formerly Pimelodidae now Pseudopimelodidae ~jaw teeth no pharyngeals

barbels ~4 pairs 1 nose (nasal) 1 mouth (maxillary) 2 lower jaw = (mandibular)

N. America Eurasia S. America Africa Siluriformes ~2400 sp. except Australia

North America Ictaluridae ~46 species

Europe Siluridae ~97 species wels glass

Africa ~300 sp. walking electric upside-down squeaker ~parasitic

Asia ~650 sp venomous cryptic Mekong giant

South America ~1,300 sp. ~adipose fin ~armor plates ~barbels

Pimelodidae whiskered catfishes ~85 species “sailfin” pimelodid (Leiarius sp.) 3 pairs of barbels no nasal elongated maxillary adipose fin plates some spinous rays

NEAq Pimelodidae red-tail catfish Phractocephalus hemioliopterus NEAq

Hassar orestis Doradidae thorny (armored) catfishes ~72 sp. 3 pairs of barbels (no nasals) mandibular branching plates with spines spinous dorsal vibrate pectoral fin spine or gas bladder = “talking” NEAq see Amazon (ripsaw) thorny catfish (Platydoras costatus)

Callichthyidae armored catfishes ~177 sp. banded corydoras (Corydoras barbatus) 1-3 pairs of barbels bony plates dorsal, pectoral, adipose spine bony case around gas bladder vascular hind gut for terrestrial forays banded corydoras (Corydoras barbatus)

sailfin catfish Pterogoplichthys gibbiceps Panaque nigrolineatus NEAq see also multiradiatus Loricariidae suckermouth (armoured) catfishes ~685 sp.

needle catfish (Farlowella amazonica) NEAq see twig (F. aqus) subterminal mouth bony plates ~ spinous rays aka “pleco” = plecostomus Loricariidae