1. PNG Rainbows seem to have more aggression in them than Oz ones in
general
2. Males together tend to establish a dominance "pecking" order and perhaps
"big Red" wouldn't elect to go further down the order
3. Putting them in a new tank tends to induce a whole new establishment of
dominance hierarchy e.g. in the old tank perhaps red was there first and so
Boesmani naturally stayed under the thumb as he came second but in a new
tank that is all water under the bridge and they start anew.
FWIW in my experience Incisus are one of the most aggressive of the
Rainbows from PNG and of the Australian species I have found individual
specimens of Cairnsicthys a bit unpredictable.
Bruce Hansen
ANGFA
----------
> From: Dan Simon <dan.simon at attws.com>
> To: 'RSG mail' <rainbowfish at pcug.org.au>
> Subject: [RML] Big Red is Dead
> Date: Wednesday, 12 March 1997 6:47
>
> I transferred my Boesmani and Incisus in a new 10g tank on Sunday
> night. This was done to accommodate my three praecox with a planted
> tank to induce a spawn.
> Immediately, the Boesmani began to relentlessly harass the Incisus.
> When I returned home on Monday, Red was dead.
>
> This is the first time I noticed any aggression in Rainbows.
> Thoughts ?
>
> Dan Simon
> Seattle