Improving dorsal fins/tail of mollies/guppies... help!

[Soul-Music]

Is there a way to do this? I'm just curious because I'm really eager to do this and I'm breeding them. And i always ensure to reach their optimum health through diet (tubifex worms and flakes) and water change. I see changes in their growth but not development.

My tank is 10 gallons and it has 8 mollies (2 males and 6 females) and 4 guppies (1 male and 3 females). I will get a bigger tank soon (a friend offered me to buy his 75 gal aquarium with a stand.)

Thank you for your advice.

[Sploke]

Depending on the bloodline and genes involved, there will only be so much you can do to improve the look and finnage of your fish. A proper and varied diet can help to bring out the colors and display of the fish, but for example, just feeding lots of the right foods can't turn a regular molly into a sailfin, or create a super-delta tail guppy. Those type of characteristics have to be brought out through selective breeding through several generations.

[Inka4040]

Considering you're working with the correct strains and types to begin with, nothing beats lots of space, clean water, and a high protein diet for creating optimal growth. For sailfin mollies, the space factor is extremely important, and despite any possible genetic potential, you surely won't be raising any lookers in a 10 gallon tank. Keep in mind that an adult male sailfin molly can easily reach 4 inches, and females can get close to 5.

[Soul-Music]

Considering you're working with the correct strains and types to begin with, nothing beats lots of space, clean water, and a high protein diet for creating optimal growth. For sailfin mollies, the space factor is extremely important, and despite any possible genetic potential, you surely won't be raising any lookers in a 10 gallon tank. Keep in mind that an adult male sailfin molly can easily reach 4 inches, and females can get close to 5.

Yes, i have the right breed and strain... a white and a dalmatian male sailfin which I treasure so much (since they're very rare in the Philippines and could only find a few) and the are females. I bought a 50 gallon 2 weeks ago (and it's already cycled) and it has been in use for a week now. i see changes in their size but only a little (it's good news though).

Thanks for your advice, guys!