>
Siluriformes (Catfishes) >
Callichthyidae (Callichthyid armored catfishes) > Corydoradinae
Etymology: Corydoras: Greek, kory = helmet + greek, doras = skin (Ref. 45335).
More on authors: Eigenmann & Kennedy.
Môi trường: môi trường / vùng khí hậu / Mức độ sâu / phạm vi phân phối
Sinh thái học
; nước ngọt gần đáy; pH range: 6.0 - 8.0; dH range: 2 - 25; mức độ sâu 0 - 1 m (Ref. 123578). Tropical; 22°C - 26°C (Ref. 13371)
South America: Paraguay River basin.
Bộ gần gũi / Khối lượng (Trọng lượng) / Tuổi
Chín muồi sinh dục: Lm ?  range ? - ? cm
Max length : 5.4 cm SL con đực/không giới tính; (Ref. 123578)
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).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Facultative air-breathing (Ref. 126274); 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).
Vòng đời và hành vi giao phối
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng
The female holds 2-4 eggs between her pelvic fins, where the male fertilizes them for about 30 seconds. Only then the female swims to a suitable spot, where she attaches the very sticky eggs. The pair repeats this process until about 100 eggs have been fertilized and attached (Ref. 1672).
Tencatt, L.F.C., S.A. dos Santos and M.R. de Britto, 2020. Taxonomic review of the typical long-snouted species of Corydoras (Siluriformes: Callichthyidae) from the río de La Plata basin. Neotrop. Ichthyol. 18(4):1-36. (Ref. 123578)
Tình trạng Sách đỏ IUCN (Ref. 130435: Version 2025-2 (Global))
Mối đe dọa đối với con người
Harmless
Sử dụng của con người
Các công cụ
Báo cáo đặc biệt
Tải xuống XML
Các nguồn internet
Ước tính dựa trên mô hình
Chỉ số đa dạng phát sinh loài (Tài liệu tham khảo 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
|
Bayesian length-weight
|
a=0.01820 (0.00782 - 0.04232), b=3.02 (2.82 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Mức dinh dưỡng (Tài liệu tham khảo 69278) |
3.0 ±0.3 se; based on size and trophs of closest relatives |
Thích nghi nhanh (Tài liệu tham khảo 120179) |
Chiêù cao, thời gian nhân đôi của chủng quần tối thiểu là dưới 15 tháng (Preliminary K or Fecundity.). |
Sự dễ bị tổn thương của nghề đánh cá (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |