分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes)
毛鼻鯰科 (Pencil or parasitic catfishes) > Vandelliinae
Etymology: Paracanthopoma: Greek, para = the side of + Greek, akantha = thorn + Greek, poma, -atos = cover, operculum (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的.
South America: Brazil.
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 2.2 cm SL 雄魚/尚未辨別雌雄; (Ref. 124573)
簡短描述
型態特徵 | 形態測量圖
This species is distinguished from Paracanthopoma parva by the following characters: a short and anteriorly-displaced opercular patch of odontodes, leaving a large posterior free area of integument continuous with the rest of the head integument around it (in dorsal view the posterior tips of the opercular odontodes do not reach the base of the pectoral fin); pelvic fin 3 (vs. 5); opercle without an ascending process (vs. with ascending process); caudal peduncle spatulate by hypertrophied series of 22?29 (upper) and 20?29 (lower) procurrent caudal-fin rays (vs. caudal peduncle narrow, with 15-19 upper and 14-18 lower rays); median premaxillary dentition feeble, with 3 delicate teeth (vs. median premaxillary dentition robust, 9 large strong teeth); supraorbital canals opening as two separate s6 pores (vs. canals fused at midline and opening as single median s6 pore); caudal fin slightly convex or truncate, with round edges (the apparent emarginated margin is a preservation artifact) (vs. bilobed or emarginate, concave); supraoccipital no anterior median process (vs. supraoccipital with produced anterior process); origins of dorsal and anal fins approximately at same vertical (vs. origin of dorsal fin clearly anterior to vertical through origin of anal fin) (Ref. 124573).
The Rio Taquarizinho is ca. 15 m wide at the collection locality; the water is clear, slightly milky and with moderate current. Specimens were collected by seining on sand banks in the middle of the river, especially in sectors shaded by riparian vegetation. There was no aquatic vegetation and depth of collection ranged from 30-150 cm. This species is sympatric with Paravandellia oxyptera, both are relatively abundant at the type locality. These two species are psammophilic, but with different microhabitat preferences where P. saci favors fine sand, while P. oxytera prefers sectors with coarser granulation. Segregation is not complete however, and occasionally they were captured together in the same net. Some female specimens have large eggs, approximately eye-sized or slightly larger, visible by transparency. Eggs distributed along ventral margin of hypaxial musculature from shortly posterior to end of pectoral fin to nearly end of abdominal cavity, with approximately 20 eggs visible in lateral layer of each side (certainly more in inner portions of gonad) (Ref. 124573).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Dagosta, F.C.P. and M. de Pinna, 2021. Two new catfish species of typically Amazonian lineages in the Upper Rio Paraguay (Aspredinidae: Hoplymyzontinae and Trichomycteridae: Vandelliinae), with a biogeographic discussion. Pap. Avulsos Zool. 61:e20216147. (Ref. 124573)
人類使用
更多資訊
俗名同種異名新陳代謝捕食者生態毒物學繁殖成熟度產卵場產卵群集孕卵數卵卵發育
年龄/大小成長長度-重量長度-長度長度-頻率形態測量圖型態特徵仔魚稚魚動力學入添量豐度BRUVS
參考文獻養殖養殖資訊品種遺傳學Electrophoreses遺傳率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.聲音神經毒速度泳型鰓區Otoliths腦重體重比眼睛色素
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.2 ±0.6 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
