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Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypoptopomatinae
Etymology: Kronichthys: Because of Mr. Ricard Krone (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce démersal. Tropical; 20°C - 24°C (Ref. 13614)
South America: Ribeira de Iguape River basin.
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 12.0 cm TL mâle / non sexé; (Ref. 13614)
Facultative air-breathing in the genus (Ref. 126274); Inhabits streams with rocky and sandy bottom, in places up to 0.8 m deep and with water flow up to 30 cm per second. Forages both during the day and at night. Grazes on microscopic algae, mostly diatoms and green algae growing on rocks and submersed vegetation. Occasionally takes chironomid and simuliid larvae, as well as tiny crustaceans. Before grazing on a patch with dense sediment, the fish makes wiggling head-down movements which raise sediment, to be blown away by the water current. When grazing algae off the substrate makes vigorous mouth movements, and moves by jerky movements probably related to its mouth making alternate grazing and attaching to the substrate. Leaves conspicuous grazing marks on exposed rocks. May re-graze a given spot by moving backwards. Density may reach about 1 fish per square meter in stream stretches shaded by the forest and 2.5 fish per square meter in sunny stretches (Ref. 26630).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves
Burgess, W.E., 1989. An atlas of freshwater and marine catfishes. A preliminary survey of the Siluriformes. T.F.H. Publications, Inc., Neptune City, New Jersey (USA). 784 p. (Ref. 6868)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00759 (0.00337 - 0.01709), b=3.12 (2.93 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 2.1 ±0.09 se; based on food items.
Résilience (Ref.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
