Re: WIDE span of behaviors across Dicrossus

["Bolton Museum, Art Gallery & Aquarium" <bolnathist@gn.apc.org>]

> I'm keeping seven adolescent (4M 3F) wild-caught D. sp. Rio Negro in a 58G
> with 8 Nannostomus espei, 6 sailfin tetras (Crenuchus spilurus), 6
> Hyphessobrycon robertsi, 6 Mimagoniates microlepis, and a single flat
> flyer pleco (L235-ish).  I've got a friend who kept about 10 D. sp. Rio
> Negro along with C. spilurus, until he saw the Rio Negro attack a C
> spilurus and kill it.  This is someone who's kept and bred fish for many
> years, and I think the story is reliable.
With Crenuchus being crevice-spawners with a display posture 
which a cichlid may view as a challenge, it occurs to me that this 
may have been over territory as much as anything, or alternatively 
the Dicrossus may recognise the Crenuchus as potential fry 
predators, although in spite of the impressive mouth of the males 
they are nothing like as bad as you might expect. 
As an aside, make sure you keep oxygen levels at an optimum for 
the Loricariid (poss. Lasiancistrus or Dolichancistrus). The 
'flattened Plecs' are all a bit touchy on this point.
Pete Liptrot
Bolton Museum Aquarium
Le Mans Crescent, Bolton BL1 1SE
01204 332200


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