Callichthys callichthys  (Linnaeus, 1758)

Cascarudo
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Siluriformes (Catfish) > Callichthyidae (Callichthyid armored catfishes) > Callichthyinae
Etymology: Callichthys: Greek, kalos, kallos = beautiful + Greek, ichthys = fish (Ref. 45335).

Environment / Climate / Range Ecology

Freshwater; demersal; pH range: 5.8 - 8.3; dH range: ? - 30.   Subtropical; 18°C - 28°C (Ref. 1672)

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 17.0 cm SL male/unsexed; (Ref. 81048); max. published weight: 80.00 g (Ref. 79585)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 6-8

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

South America: Most Cis-Andean South American river drainages north of Buenos Aires, Argentina.

Biology     Glossary (e.g. epibenthic)

Found in extreme environments, from anoxic conditions (slack water zones bordered by dense vegetation) (Ref. 35381) to slightly turbid but free flowing streams (Ref. 11225). When its biotope becomes dry, it can move pout of the water, due to its ability to breathe intestinally, in order to find another aquatic environment (Ref. 35381). Feeds at night on fish, insects and plant matter (Ref. 7020). Juveniles feed on rotifers, in addition to the micro-crustaceans and aquatic insect larvae they find when digging into the substrate (Ref. 35381). During reproduction, the male's belly turns orange and its pectoral spines become longer and thicker. The male builds a bubble nest with some floating plants, strongly guarding it after the female lays down her eggs (up to 120) (Ref. 35381). Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 120 cm (Ref. 51539).

Main reference Upload your references | References | Coordinator : Reis, Roberto E. | Collaborators

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)

IUCN Red List Status (Ref. 90363)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: minor commercial; aquarium: commercial
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5625   [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), based on all LWR estimates for this body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.0   ±0.3 se; Based on diet studies.
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (Fec=120).
Vulnerability (Ref. 59153):  Low vulnerability (15 of 100) .
Price category (Ref. 80766):   Unknown.