In addition,
the impact on the habitat component of aquatic ecosystems
by sailfin catfishes was also noticed. E.g., in the Lake
Okeechobee, larger vermiculated sailfin catfish P.
disjunctivus were reported to erode a bank by burrowing up
to one meter deep holes in it (Anonymous 2004). The
resistance of Amazon sailfin catfish P. multiradiatus to
predators was observed at Puerto Rico, where the brown
pelicans Pelecanus occidentalis have stangled trying to
swallow them (Bunkley-Williams et al. 1994); similar could
be expected in an attempt of preying of great cormorant
Phalacrocorax carbo on the Amazon sailfin catfish in the
Danube River ecosystem