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Gymnotiformes (Knifefishes) >
Apteronotidae (Ghost knifefishes) > Apteronotinae
Etymology: Compsaraia: Greek, kompsos, -e, -on = elegance, polish, gracefulness + see under Raja; iara: Named after the Iara, a water nymph from Tupi-Brazilian folklore said to reside in the rivers of the Brazilian Amazon and often blamed for the disappearance of fishermen. A noun in apposition.
Eponymy: Iara, also spelled Uiara or Yara, is a water nymph in Brazilian folklore. She is said to reside in rivers and is often blamed for the disappearance of fishermen. (Ref. 128868), visit book page.
Meio ambiente: milieu / Zona climática / intervalo de profundidade / faixa de distribuição
Ecologia
; Água doce demersal; intervalo de profundidade 2 - 30 m (Ref. 115978). Tropical
South America: Amazon River basin in Brazil.
Tamanho / Peso / Idade
Maturidade: Lm ?  range ? - ? cm
Max length : 23.5 cm TL macho/indeterminado; (Ref. 115978)
Descrição suscinta
Chaves de identificação | Morfologia | Morfometria
Raios anais : 155 - 174. Compsaraia iara is easily diagnosed from all species of Compsaraia by the following characters: forehead strongly rounded with dorsal margin of frontals and parasphenoid convex (vs. straight or concave in adult C. compsa and C. samueli); mouth small, gape not reaching vertical with eye in adults (vs. reaching or exceeding vertical with eye in adult C. compsa and C. samueli); absence of premaxilla teeth (vs. 8-16 premaxilla teeth in C. compsa and 4-10 in C. samueli (Ref. 115978).
Body shape (shape guide): elongated.
Found in white waters at depths ranging from 2- 30 meters. Feeds exclusively on dipteran (Ceratopogonidae) larvae mixed with very fine sand, suggesting a benthic foraging behavior (Ref. 115978).
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Bernt, M.J. and J.S. Albert, 2017. A new species of deep-channel electric knifefish Compsaria (Apteronotidae, Gymnotiformes) from the Amazon River. Copeia 105(2):211-219. (Ref. 115978)
Status na Lista Vermelha da UICN (Ref. 130435: Version 2025-2 (Global))
Ameaça para os humanos
Harmless
Uso pelos humanos
Ferramentas
Relatórios especiais
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Fontes da internet
Estimativas baseadas em modelos
Índice de diversidade filogenética (Ref. 82804) |
PD50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00347 (0.00141 - 0.00851), b=3.06 (2.85 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Nível Trófico (Ref. 69278) |
3.3 ±0.3 se; based on size and trophs of closest relatives |
Vulnerabilidade da pesca (Ref. 59153) |
Low vulnerability (12 of 100). 🛈 |