Cathorops spixii, the Madamango sea catfish, raspfin sea catfish or spring cuirass,Common names of Cathorops spixii at www.fishbase.org. is a species of catfish in the family Ariidae. It was described by Louis Agassiz in 1829. It is a tropical, marine and brackish water-dwelling catfish which occurs between Colombia and Brazil. It inhabits a depth range between . It reaches a maximum total length of , more commonly reaching a TL of .
Cathorops spixii feeds on a variety of crustaceans, including amphipods, copepods, isopods; as well as bony fish and benthic invertebrates.Food items reported for Cathorops spixii at www.fishbase.org. It is preyed upon by Arius parkeri and Elops saurus.Organisms Preying on Cathorops spixii at www.fishbase.org. It is marketed commercially.
The species epithet refers to biologist Johann Baptist von Spix.
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