|Some Killifish Economics|
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Pet World Visit
Angelfish Produce Huge Spawns. When fish farmers spawn a pair of angelfish, they pull some 200 to 600 eggs. They will easily raise 95% of them to sellable size. Serious angel breeders rarely spawn one pair at a time. They set up 20 pairs at a crack (Captain Jack was running 50 breeder pairs) and can usually pull the eggs on half these pairs within the same week. Within 5 to 10 days the little wigglers are up and swimming and ready to eat newly hatched brine shrimp.
Bettas Produce Large Spawns.
When breeders spawn bettas, they likewise set up dozens of breeder
pairs and can usually pull hundreds of eggs from each pair.
Betta eggs hatch rapidly. The
fry are ready to eat the same week.
Killies Produce Small Spawns. When breeders spawn
plant-spawning killifish, they usually spawn one pair at a time.
After a few days, they look through each strand of their spawning
mop and pull maybe a dozen eggs. They
store these in carefully dated containers and repeat the process every
three days or so. Killie eggs
start hatching in two or three weeks.
Some take longer.
Killie Hatch Rates Vary a Lot. Larger killifish fry cannot
be mixed with smaller fry. They
like their taste too much. So,
the killie raiser winds up with numerous small containers of small
quantities of fish. And those
were the easy ones to hatch. See Plant
Spawning Killifish for tips on how to better control their hatch
See Plant Spawning Killifish for tips on how to better control their hatch rates.
Killie Eggs Take Longer to Hatch. Peat spawners throw more
eggs over a three-day period, but they take longer to hatch – some as
long as three months. And,
they don’t all hatch on the same day.
Once again, the killie raiser winds up with several containers of
small quantities of various sized killifish.
You Can’t Mix Killies.
Angel raisers and betta raisers can throw all their fry of equal
sizes together. Killie keepers
cannot. Nearly all the females
of killie groups look alike. Certainly
enough alike that male killies willingly breed with females of any closely
related species. Killie
breeders very carefully maintain the integrity of the different species
they raise. They do not want
to raise hybrid cross-breeds.
Killies Breed Easily. Most killifish breed quite readily. Most killie fry are not that hard to rear. Unfortunately, not that many result from each spawning.
Few Commercial Varieties Are Available. Some four species have
appeared on the price lists I have seen over the last five years or so.
Only half were what I’d call desirable species.
And when you ask the average wholesaler, they cannot give you a species
name. They call them
And when you ask the average wholesaler, they cannot give you a species name. They call them“golden wonders” instead of Aplocheilus linneatus. Or, they call them some equally inventive name. Worse yet, they sometimes call the same fish different names. Very few killies have common names.
Killies Will Remain a “Cottage Industry.” Killies
easily rank among the prettiest fishes on the market.
Because they are only raised by very dedicated hobbyists, they will
never be a standard community fish. The
logistics of rearing them will always keep them a pricey fish.
Enjoy them if you can find them.
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