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RE: fish food - Living room gularis tanks
Hi Scott,
There are many newbies on this list and you are very wrong to confuse them!
Everyone knows that you flood the basement and not the living room in order
to raise Gularis. Such misleading advise could cause unwanted mildewing of
the adjoining walls, caulking issues and if your spouse forgets and opens
the living room door....Gularis tragedy. Not only that but if your Gularis
ever figure out how to turn on the TV which you have so fastidiously caulked
and see the fishing channel or catch a Mrs. Paul's fish sticks commercial
they could develop irreparable psychological damage. Not to mention what
Oprah could do to their delicate fish Psyches.
Worse yet plastic covering your furniture is just tacky by modern standards!
And sofa cushion float can upset your wife's decor!
Newbies count on us for good solid advise. Like how to properly caulk and
snorkel your oil burner or waterproof your fuse box. Lets not mislead them
especially if they happen to be renting the apartment above me.
Best regards,
~RJ~
-----Original Message-----
From: owner-killietalk at aka_org [mailto:owner-killietalk at aka_org]On
Behalf Of Scott Davis
Sent: Wednesday, August 08, 2001 9:36 AM
To: killietalk at aka_org
Subject: Re: fish food
> Kind of interesting that many (over half) of the Aphyosemions I keep will
totally ignore their fry if only a single pair is present in the tank. A
third or fourth fish, no fry survive. ...
This is the population equilibrium thing. In nature or an aquarium if there
are no alternative foods for adults one can expect that they may prey on
fry. One wonders if there is not enough food for the adults if it makes
*sense* to have more hungry mouths of a species around which will starve.
Better to return the protein to the adults for later.
Maybe you recall that old high school biology film where they put a pair of
mice in a cage and feed them a set quantity of food and water. The
population will expand until a certain point and then stop at a certain
number. (The kids can get pretty grossed out at the mechanisms involved in
the stopping of the increase.)
When the food ration is increased, the population will increase to a certain
point and level off again. Keeping the other variables the same, increasing
the size of the living quarters will again cause a population spurt followed
by another equilibrium.
In an aquarium, if there are plenty of alternatives in a sparsely populated
tank, the adults will virtually always go for the daphnia, worms or bs
before going for their youngsters. Likewise I'll bet if fry are swimming in
baby brine shrimp or newly hatched mosquito larvae, they will leave their
smaller siblings alone (at least until the bs run out).
The bigger tanks in a so called natural set up will often shelter and feed
more killie fry. That works with a lot of other fishes (livebearers,
anabandids, some rainbows, even king's tetras ...) too.
Backyard tubs often are very productive because of the space and insects who
obligingly drop in. More food + more space + hiding places (and the rotifers
growing on them, especially plants) = more surviving fry.
Now if only I could make the living room water tight, flood it and raise
blue gularis.
All the best,
Scott
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