My son is 9 years old, and I talked him into a beta for his first pet. (He wanted a hampster!) We're both excited about him (her?), but I'd like to find out more about it, so we can better understand, um, it.
First, how do you tell who's a male and who's a female? lol... Without further ado, I'd like to introduce you to Lil' Bit Fishy.
I'll try and get some better pictures of Lil' later on. The girl at the pet store said he (it) was a young giant, and that we could expect him to grow to around 3-4 inches? That seems huge to me for a beta. Right now we have him in a one gallon tank, but I'd like to find him something nicer in the future.
You must have bought a "King" betta. They grow larger than the average betta.
The way to tell a male and female apart is the fin length. Males have longer fins than the femals in most cases. There is an exception- Plakats. The male plakat betta has shorter fins than other males. Your betta looks like it's fins are too short to be a male, yet pretty long for a female. I can't really tell. If you look closely, you can see eggs if it's female. The eggs would be around where the stomach is, which is under the "chin".
The sales girl specifically said giant, but, we are in a small town, with a small pet store, so she may not be going by much except what her boss told her. I'll try and look for eggs... I'm having trouble seeing her well because she's dark, and this goofy tank that we bought is hard to watch her in. I may try and find a better container somewhere in the house tonight.