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Breeding Killifish (Part 1)

Planning on breeding fish or already breeding them.

Breeding Killifish (Part 1)

Postby NightwishRaven999 » Wed Mar 11, 2009 9:28 pm

Killifish breeding can be a very educational experience for the beginner and for the experienced fish keeper.
Like all fish families, some killifish are easily bred while others are quite a challenge.
This article will discuss the basic needs for successful killifish breeding.

The basic equipment needed to sucessfully breed killifish is quite similar to that of other egg-laying species.

- A small aquarium, preferably 2 to 5 gallons.
- An air stone
- A heater
- A magnifying lens
- A kit to test pH

-Conditioning before breeding and sex ratio-

First lets talk about the sex ratio for ideal killifish breeding.
In most cases, the male killifish is relatively quite easy to tell apart from his female counterpart.
The males, usually bigger, larger and more colorful than the females, also carry longer and more pointed fins.
The female usually has a plump belly, duller colors and is often smaller than the male. She also has shorter and more rounded fins and lacks the males habit to display flashy colors in an effort to court or to intimidate another fish.
In some species the difference between the sexes is so great that it may confuse one to believe that he or she is dealing with two different fish species.

The male killifish will almost always be very devoted when it comes to courting of the females.
Like gouramis, male killifish may become so carried away by this that they may often hurt or even kill the female.
This said, if you plan on breeding your killifish, you should have 2 or more females per male.
This will minimise courtship related stress and keep the male from stressing one female in particular.


-Conditioning before breeding-

Killifish require little to get into breeding mode. A varried diet of flakes, chopped earth worms and brine shrimp usually works wonders.
They do however require a heavily planted tank. Ideally, a 2 gallon tank should be set up for the bredding pair or trio.
The tank should be averaging between 70-78 F depending on the species.
Plants such as Java moss should be kept in large ammounts. Nylon mops are also a very good way to intice spawning.

I will introduce you to creating such artificial spawning devices in another article that I will be posting shortly.
Killifish set for breeding should be fed as often as possible with a large variety of foods.
Remember, the healthier the parents are, the healthier the fry will be.
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