Iheringichthys

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Iheringichthys
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Pimelodidae
Genus: Iheringichthys
Eigenmann and Norris, 1900
Species
  • I. labrosus
    (Lütken, 1874)
  • I. megalops
    Eigenmann & Ward, 1907

Iheringichthys is a small genus of catfish (order Siluriformes) of the family Pimelodidae. It includes two species, I. labrosus and I. megalops.[1]

Contents

[edit] Distribution

Both species of Iheringichthys are distributed in the Paraná River basin.[2][3]

[edit] Appearance and anatomy

Iheringichthys species have a narrow, small mouth positioned to point downwards.[4]

[edit] Ecology

I. labrosus has been studied to feed off of the bottom, mainly at dawn and during daytime hours. Main items in the diet of I. labrosus are aquatic insects (mainly Chironomidae) and mollusks (mainly Bivalvia).[4] Studies on I. labrosus demonstrates that this species is non-migratory and does not exhibit any parental care.[5] These fish reproduce all year, with spawning peaking from February to May.[5]

[edit] Relationship to humans

I. labrosus is a secondary commercial fish species in the Itaipu Reservoir. With the end of the trophic upsurge period in the Itaipu Reservoir, secondary species may become important resources for the commercial fishery, including I. labrosus. It is an important fish species in other reservoirs of the basin, especially Promissão and Água Vermelha Reservoirs. It is also an important sport fish in the sand beaches (“mandizeiros”) fishery along the upper Paraná River channel and main tributaries.[4]

[edit] References

  1. ^ Iheringichthys (TSN 679561). Integrated Taxonomic Information System. Retrieved on June 3, 2007.
  2. ^ "Iheringichthys labrosus". FishBase. Ed. Ranier Froese and Daniel Pauly. June 2007 version. N.p.: FishBase, 2007.
  3. ^ "Iheringichthys megalops". FishBase. Ed. Ranier Froese and Daniel Pauly. June 2007 version. N.p.: FishBase, 2007.
  4. ^ a b c Abes, Sara da Silva; Agostinho, Angelo Antonio; Okada, Edson Kiyoshi; Gomes, Luiz Carlos (March, 2001). "Diet of Iheringichthys labrosus (Pimelodidae, Siluriformes) in the Itaipu Reservoir, Paraná River, Brazil-Paraguay" (PDF). Brazilian Archives of Biology and Technology 44: 101–105. ISSN: 1516-8913. 
  5. ^ a b Santos, José Enemir dos; Bazzoli, Nilo; Rizzo, Elizete; Santos, Gilmar Bastos (2004). "Reproduction of the catfish Iheringichthys labrosus (Lütken) in Furnas reservoir, Minas Gerais, Brazil" (PDF). Revista Brasileira de Zoologia 21 (2): 193–200. doi:10.1590/S0101-81752004000200006. 
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