#noturus

Tadpole Madtom (Noturus gyrinus), family Ictaluridae, order Siluriformes, Delmarva Peninsula of the Mid-Atlantic U.S.

This individual was caught as part of a scientific survey, and then released.

Stonecat Noturus flavus

A freshwater catfish found in the Great Lakes, the St. Lawrence River, drainages of Hudson Bay, and the Mississippi River basin of North America. The stonecat is a benthic, opportunistic feeder, using its sensitive barbels during the night to search for food on the river bottom.

Neosho Madtom Noturus placidus

Historically, the Neosho madtom was found in the Neosho, Cottonwood, Spring, and Illinois Rivers in Kansas, Missouri, and Oklahoma. It is believed to be no longer present in the Illinois River and scattered through the rest of its historic range. Neosho madtoms are short-lived fish, only occasionally surviving more than three years. Adults bury themselves in the gravel during the day and come out to feed at night.

Pseudomystus siamensis

Heok Hee Ng, Jörg Freyhof, and J. W.Armbruster (2005) A New Species of Pseudomystus (Teleostei:Bagridae) from Central Vietnam. Copeia: December 2005, Vol. 2005, No. 4, pp.745-750.

A new species of bagrid catfish named Pseudomystus sobrinus was observed. P. sobrinusis different from P. siamensis in that it has “a slightly bulbous snout,shorter adipose-fin base and pectoral-fin spine”. (Source cited above).

Bagrid/bagridae catfish

Experiments on Pseudobagrus fulvidraco(yellowhead catfish/Korean bullhead) showed that the optimal diet for growthand effective protein utilization in fingerlings is 42% protein and 19% lipid. (Source)

Experiments on Mystus nemurus (AsianRed Tail Catfish) showed that types of lipids consumed by the fish (cod liveroil, corn oil, and crude palm oil) did not impact the growth performance of thefish. Fish that consumed lipids from refined, bleached and deodorized palmolein showed significantly higher growth rates. The article suggests that usingpalm oil in dietary formulas for M. nemurus and other catfish species may lowerthe cost of fish feeds (due to the oil’s widespread availability). (Source)

Madtoms, Noturus spp

Experiments on hatching Madtom (Noturus insignis) eggs found that theoptimal conditions were a high water temperature and agitation strong enough totumble eggs. The temperature was from 28-30 degrees C (~82-86 degrees F) andthe egg masses were kept in constant motion. These techniques for artificialegg hatching and propagation may assist in the recovery of this fish. Malemadtom fish was proven to be one of the least effective methods because of thetendency for the fish to cannibalize their eggs if the nest is disturbed at all,even if fed properly (this is especially true in captivity). (Source)