is known in Ecuador as the "raspabalsa".
It is a large, ecologically important herbivorous
fish that feeds on algae and plants on rocks, trunks,
and other submerged structures including small boats
(Barnhil et al., 1974; Laaz et al., 2009).
Habitat: This species is very common in the
Guayas River drainage. Description:
Isorineloricaria spinosissima differs from
other species by the following characters: long and
slender caudal peduncle, which is almost round in
traverse section, peculiar and very prominent secondary
sexual dimorphism, with females being more rugose
than the average Hypostomus due to the odontodes
becoming excessively long (Isbrucker, 1980).
Aquarium Care: Non territorial and peaceful
but they are messy eaters and as such good water quality
would need to be adhered to. A large tank over 5ft
(150cm) would be needed due to the eventual adult
size of this catfish. Diet: Omnivore
in the aquarium but prefers vegetable foods.
Pacific versant rivers of Ecuador. Type locality:
Windsor, Aquirre; Latz,
Fishes of Western Ecuador.
05/2021. Isorineloricaria spinosissima
(Steindachner, 1880) observed in Ecuador by Daniel.
08/2012. Ferraris, C.J. Jr., 2007. Checklist
of catfishes, recent and fossil (Osteichthyes: Siluriformes),
and catalogue of siluriform primary types. Zootaxa