| Callichthyidae (Callichthyid armored catfishes), subfamily: Corydoradinae |
| 5.38 cm SL (male/unsexed) |
|
demersal; freshwater; pH range: 6 - 8; dH range: 2 - 25; depth range 0 - 1 m |
| South America: Paraguay River basin. |
|
This species is distinguished by the following characters: temporal sensory canal in sphenotic with two pores anterior to the branch that gives rise to infraorbital canal; upper tooth plate of branchial arch with three to four series of teeth; area at the corner of the mouth, ventral to
maxillary barbel, with a fleshy flap; no dark brown or black stripe transversally crossing the eye; ventral surface of head and trunk densely covered by small, not coalescent platelets; color pattern of the middle portion of its flank, composed by two or three dark brown or black patches, with first one below dorsal-fin, second one below adipose-fin base and third one, when present, diffuse, and on caudal peduncle base, patches decreasing in size posteriorly; with a poorly developed fleshy flap of skin at the corner of the mouth; presence of short opercular membrane, leaving the anteroventral portion of cleithrum exposed (Ref. 123578). |
| This species was captured from small streams to the main channel of rivers within Paraguayan territory. The arroyo Laguna Penayo is a stream with about 20 m width and 0.5 m deep, with very slight to stagnant current, turbid water, and substrate composed mainly of clay. An unnamed stream tributary from the río Apa, about 25 m width and 1 m deep, with stagnant current, dark brown, very turbid water, and substrate composed by sand, rocks and trunks. The río Araguay-Guazú, is relatively small river with about 35 m width and 1 m deep, moderate current, turbid water, and substrate composed mainly by sand. The río Jejuí-Guazú is a small river with brown semi transparent water, and substrate composed mainly by sand, gravel and leaf heaps. Another small, unnamed stream tributary from the río Paraguay has light brown water, and substrate composed mainly by sand. Most sites presented some degree of anthropogenic impact (Ref. 123578). |
|
Least Concern (LC); Date assessed: 08 October 2020 Ref. (130435)
|
| harmless |
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