FS: F1 Pelvicachromis taeniatus Njanje

[Nebraska_cichlids]

I grew out some more F1 Njanje: 10 fish for $20 plus shipping (flat rate: $15 USPS Priority). No box charge or other hidden charges. Live arrival guarantee only if buyer upgrades to overnight courier. Continental U.S. only. Send PM if interested. I'llbe out of town this WED through SUN.

 

[wethumbs]

what is the typical sex ratio for each batch of frys?

 

[Gordon C. Snelling]

I recently received a batch of these fry. Although not large enough to sex out yet they look great. Thanks again Janos

 

[Nebraska_cichlids]

I always sold all my fry before they were large enough for reliable sexing. I spawn them in RO water (sex ratio should be okay), but grow them out in a 50/50 mix of RO/tap.

I'm on a business trip in DC right now but will be back in Lincoln on Sunday.

Janos

 

[wethumbs]

You are assuming the sex determination of fish is only genotypic. In many cases as well as reptiles, early development irreversibly determines whether an individual will be male or female. Genotypical sex determination definitely is true for homosapien, however for lower vertebrates, other environmental factors may come into play. Thus spawning the fish in ideal conditions does not guarantee a proper sex ratio will be achieved.

 

[Nebraska_cichlids]

I agree with your comments regarding environment and gender distribution. However, who is to tell whether 50/50 tap/RO is better or worse than 100% RO for the Njanje, leave alone other environmental factors such as temp., diet, population density, and presence of predators (which all might be different in a buyers tank compared with mine). As I stated above, I never grew mine out to a point where I could reliably sex the fish. One would probably have to do a full-blown, well-controlled study to find out how to shift sex ratios and to what extent. You are welcome to buy my fish and give it a shot! Just my two cents.

 

[levine]

I purchased a group of the Njanje from Nebraska_cichlids and they look awesome and seem to be a very good mix of m/f.