How To Decide The Intercourse of Discus Fish

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One of many largest query requested of the discus breeder is “how do I decide the intercourse of my fish?” There are only a few straightforward identifiable identifiers on this course of. Right here, we are going to focus on the strategies utilized by among the high breeders.

In juvenile fish, figuring out intercourse is nearly unattainable. It is just once they start to pair off that a chance arises to assist in the dedication of intercourse. Juvenile fish, each female and male, have a rounded dorsal fin, and it isn’t till they start to mature {that a} distinction could be detected. As it’s by no means clever to excessively deal with the fish, shut statement is with a view to support the breeder.

In Allnut Enterprises’ King Discus Hatchery, for instance, it’s a straightforward course of to find out who’s who, as we now have noticed these fish for some time, and might decide the intercourse of the pairs we personal. This might be true in any hatchery. However to the uninitiated or informal observer, this could not be straightforward to do.

A few of the identifiers: The male could have thicker lips to help him in his battle to guard the feminine, and might be extra aggressive. He might be bigger than the feminine, his brow is thicker, and we now have noticed that if the discus are a bit shy, the male will generally tend to remain between the feminine and the observer.

The dorsal fin of the male might be pointed, and the feminine’s dorsal fin might be rounded. Be aware that in juvenile discus, this isn’t obvious.

The breeding tube of the feminine, between the anus and anal fin, is broader and rounder than the male, and could have a blunt tip. The male, in flip, has a smaller, sharper breeding tube. Remember that that is solely evident throughout spawning, and needs to be carefully noticed.

It has been stated that the male discus fish will are inclined to have a much less intense coloration and extra sample whereas the feminine tends to be extra colourful however with lesser sample. I disagree, as a result of too many variables are in place right here, such because the well being of the discus, the water parameters, and feeding sample.

In an fascinating article by Jeff Richard, [http://www.aquaworldnet.com/dbws/sexingdiscus.shtml] he discusses an article from Diskus Transient, a German publication, which studies a really profitable approach of decide intercourse of a discus through the use of easy geometry. Jeff studies, and I quote: “Image a discus going through to your left … you’ll be taking a look at its aspect. Discover the Dorsal (Prime) and Anal (backside) fins and look the place the fins slope down towards the Caudal (tail) fin … be sure to’re trying on the fins after they’ve curved again towards the tail. The Dorsal and Anal Fins change into (nearly) straight after the fins curve down (or up) towards the Caudal Fin … prolong an imaginary line alongside this straight part of the two fins again towards the tail which simply touches the Dorsal & Anal Fins previous the Caudal Fin. These two imaginary traces ought to intersect behind the fish. The important thing to sexing the fish is the place the traces cross the Caudal fin. In the event that they cross via the Caudal Fin, the fish is almost definitely a FEMALE. In the event that they miss or simply contact the Caudal Fin, then almost definitely it’s a MALE.” Thanks, Jeff!

Sexing Discus is tough at greatest. The simplest approach to take action is to lift a bunch of at the very least six to eight discus, and permit them to pair off when prepared. It’s a stunning sight to see this occur, and makes the interest nicely worthwhile.

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