Corydoras froehlichi

conservation

Conservation status. Despite Corydoras froehlichi is known only from the rio Pelotas and two of its tributaries, Canoas and do Peixe rivers, it is probably widespread in other tributaries to the rio Pelotas. Additionally, no imminent threat is suspected, therefore, according to the International Union for Conservation of Nature (IUCN) categories and criteria (IUCN Standards and Petitions Subcommittee, 2014), C. froehlichi can be classified as Least Concern (LC).

Revisionary study of the armored catfish Corydoras paleatus (Jenyns, 1842) (Siluriformes: Callichthyidae) over 180 years after its discovery by Darwin, with description of a new species

description

Description. Morphometric data presented in Table 1. Head compressed with slightly convex dorsal profile; triangular in dorsal view. Snout roughly rounded. Head profile convex from snout to tip of posterior process of parieto-supraoccipital. Profile slightly convex along dorsal-fin base. Postdorsal-fin body profile concave to adipose-fin spine; markedly concave from this point to caudal-fin base. Ventral profile of body nearly straight from isthmus to pectoral girdle; slightly convex from this point until pelvic girdle. Profile nearly straight from pelvic girdle to base of first anal-fin ray; slightly concave until caudal-fin base. Body roughly elliptical in cross section at pectoral girdle, gradually becoming more compressed toward caudal fin. Eye rounded, located dorso-laterally on head; orbit delimited dorsally by frontal and sphenotic, ventrally by infraorbitals. Anterior and posterior nares close to each other, only separated by flap of skin. Anterior naris tubular. Posterior naris close to anterodorsal margin of orbit, separated from it by distance equal to diameter of naris. Mouth small, subterminal, width nearly equal to bony orbit diameter. Maxillary barbel short, not reac

Revisionary study of the armored catfish Corydoras paleatus (Jenyns, 1842) (Siluriformes: Callichthyidae) over 180 years after its discovery by Darwin, with description of a new species

description

urn: lsid: zoobank. org: act: 5 C 878 AD 9 - 653 C- 4556 - 8 EAC- 9 D 56455 E 5 F 93 (Figs. 3 b, 4 b, 8, 9; Table 1)

Revisionary study of the armored catfish Corydoras paleatus (Jenyns, 1842) (Siluriformes: Callichthyidae) over 180 years after its discovery by Darwin, with description of a new species

diagnosis

Diagnosis. Corydoras froehlichi can be distinguished from its congeners, with exception of C. aurofrenatus, C. carlae, C. cochui, C. difluviatilis, C. diphyes, C. ehrhardti, C. ellisae Gosline, 1940, C. flaveolus, C. garbei, C. gladysae, C. gryphus, C. habrosus, C. lacrimostigmata, C. longipinnis, C. lymnades, C. micracanthus, C. microcephalus, C. orcesi, C. paleatus, C. petracinii, C. reynoldsi, C. septentrionalis Gosline, 1940, C. steindachneri, C. tukano and C. weitzmani by having a longitudinal series of relatively large black blotches, with size similar or larger than the size of orbit, on midline of flank (vs. midline of flank with a longitudinal series of small black blotches, with size conspicuously smaller than the size of orbit, in C. agassizii, C. ambiacus Cope, 1872, C. araguaiaensis Sands, 1990, C. breei, C. copei, C. cruziensis, C. haraldschultzi, C. incolicana Burgess, 1993, C. isbrueckeri, C. lamberti, C. noelkempffi, C. ornatus, C. orphnopterus, C. paucerna, C. punctatus, C. robineae Burgess, 1983, C. robustus, C. spectabilis, C. sterbai Knaack, 1962 and C. xinguensis; midline of flank lacking a distinct longitudinal series of blotches in the remaining species). Th

Revisionary study of the armored catfish Corydoras paleatus (Jenyns, 1842) (Siluriformes: Callichthyidae) over 180 years after its discovery by Darwin, with description of a new species