Three new species of saddled hypostomine loricariids are described. According to a recent phylogenetic analysis, these species are members of the genus Peckoltia. The species differ from all described Peckoltia except Peckoltiafurcata and Peckoltiasabaji by having the dentaries meet at an angle greater than 90°. The species also have similarities to Hemiancistrus, and can be separated from all ...

A 5-year time series of annual censuses was collected from a large floodplain lake to determine how dynamics of the local fish community were affected by changes in hydrological connectivity with the surrounding metacommunity. The lake was disconnected from the metacommunity for 1 year prior to our study and remained disconnected until 3 months before our third annual census, when a flood recon...

A total of 281 specimens of freshwater armored ornamental fish species (Leporacanthicus galaxias,Lasiancistrus saetiger, Cochliodon sp., Hypostomus sp., Pseudacanthicus spinosus, Ancistrus sp. and Rineloricaria cf. lanceolata) were captured at the hydrological basin of Guamá River, Pará, Brazil. The infection by Trypanosoma spp. was inspected. The morphological and morphometric characterization...

Flavobacterium columnare is the etiologic agent of columnaris disease, a devastating fish disease prevailing in worldwide aquaculture industry. Here, we describe the complete genome of F. columnare strain Pf1, a highly virulent strain isolated from yellow catfish (Pelteobagrus fulvidraco) in China.

l. The time course of the spontaneous discharge of Kryptopterus ampullary electroreceptors may change from regular to bursting upon impalement by a glass microelectrode. 2. The burst duration is very constant relative to the interburst interval, during spontaneous fluctuations as well as in response to low-frequency stimulation. 3. Implications for the current model of the functioning of catfis...

The reactions of catfish, sunfish, perch, and mummichog to temperature changes, as described in this paper, indicate that certain receptors supplied by the lateral-line nerve are concerned with thermal reception.

An intensive survey was undertaken and reported the existence of an invasive armoured sailfin catfish Pterygoplichthys pardalis from Bharathapuzha River, Palakkad, Kerala, India, its invasion as one foremost threats to endemic aquatic biodiversity Kerala. It belongs Genus (Siluriformes: Loricariidae) which is known popular aquarium fish that constitutes most successful freshwaters taxa, having ...

Relationships between fish length and otolith length, width mass were investigated in the two nearly threatened silurid species (Siluriformes) Ailia coila (Hamilton, 1822) Ompok pabda Hamilton, collected from Ganga River at Narora, India. The relationships (OL) total (TL), (OWd) TL, weight (OWe) TL are expressed by linear regression models; for A. coila, OL = 0.0291 + 0.8541, OWd 0.0306 0.2241,...

Pareiorhina hyptiorhachis is described from Ribeirão Fernandes and Rio Pomba, Rio Paraíba do Sul basin, Brazil. The new species is distinguished from its congeners (Pareiorhina brachyrhyncha, Pareiorhina carrancas, Pareiorhina cepta, and Pareiorhina rudolphi) by the presence of a conspicuous ridge on the trunk posterior to the dorsal fin (postdorsal ridge), simple teeth, a completely naked abdo...