Re: Death From Above (was Re: [RML] Archer River Trifasciatas

Matthew Stanton (matthews at ironbark.forest.nsw.gov.au)
Tue, 4 Nov 1997 18:16:14 +0000

On 4 Nov 97 Andrew Boyd hypothesised:

> Has anyone ever done any work on what airborne creatures predate on Bows?
> I'm thinking maybe the classical "swoop" fishing bats/birds aren't as
> common here as they may be in the New World. We do have the worlds' cutest
> kingfishers here (the little Sacreds) but none too sure about the rest of
> them, such as the infamous Cormorants. I haven't spent as much time in
> native rainbow habitat as some, I know, but I can not recall having seen a
> Rainbowfish eaten by a bird. Thoughts?

Large-footed Mouse-eared Bats (Myotis spp.) take small fish that are
on the surface. A colleague of mine here at forestry research is doing
a masters on them at the moment. So far, Plague Guppies & Hardyheads
are the main fish that have been found to be eaten. The bats probably
can't handle anything bigger than 40mm but that would certainly
include young rainbows

Cormorants certainly forage in rainbowfish streams but they feed by
poking their beaks into crevices and under logs searching for
crustaceans and demersal fish. I think it would be rare that they
could catch rainbows. Darters might, I don't know how they feed.

Kingfishers would certainly be predators of young fish.

Matthew
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