Are tropical fish easier than goldfish

Question: Sexing A Comet!?

Basically, females are rounder (because of their eggs). Males during spawning season will develop 'bumps' on their gill covers and pectoral fins, called tubercles.

Goildfish like cooler water, not tropical temps. How big is your pond? You might be able to leave the fish in it over the winter if it is deep enough to not freeze solid. You'd need a fountain or small heater to keep part of the surface from freezing to release gases.

I haven't purchased a pond yet. I will be getting one of the preformed ones that can either be above or below ground depending on whether or not you like to dig, i believe I will keep it above ground to keep the dogs from swimming which means it 'should' be easy to move inside for the winter, however that leads to the problem of lighting it efficiently while it is inside. It gets to minus 40 here a lot during the winter so I wouldnt feel safe, even at three or four feet deep as far as ice goes, not only for the fish but for damaging the pond as the ice expands. Also, I believe a pond that deep would fall into certain laws about pool safety and the risk of kids falling in and what not, a whole can of worms I am not ready to open at this point.

The Comet I have right now i rather round in the tummy however from nose to where the tail begins it is only about 4 or 5 inches long, when I purchased it about a month ago it was the size of my larger platy's so I am not sure if at this age it is even sexually mature ?! Also, would the roundness and flatness be obvious in the small size you first purchase them in or would investing in a already grown mate be worth it? Thanks so much for the info!

They don't reach maturity until at least one year of age, so the small ones you'd get at the pet store would be babies. It's best to get at least half a dozen and waiting to see what sex they turn out to be.

Why do you need to light it? You could always use a clamp light for that:

You can get clamp lights at just about any hardware, pet, or farm & feed store. They are often used to brood chicks and for reptiles.


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Secret Caribbean Island Vacations  — Businessweek
These shipwrecks host some of the world's best diving, with stingrays and 100 species of tropical fish making their home in the skeletons of Spanish galleons and British warships.

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