Baby Betta Help

[squidneh]

Hello all. As you probably know I am new to the forum.
 
Anyways, I recently got two 'baby bettas' from petco.  They each are in separate 2.5 gallon tanks, until they are older as I plan to upgrade my 40 gallon to a 75, and then shift them to that tank (with a divider) in about two months.  I absolutely adore my bettas, almost more than my other fish!
 
Alright, so the point of this post now... can you help me identify what types they are? I believe one is a male and one is a female (based on fin size, and the darker appears to have the white spot on her underside) they are small, maybe an inch and a half at most.
 
Also, I have read they are very difficult to keep alive - at the moment they seem to be thriving.  I am feeding them micro pellets designed for fry, blood shrimp, small betta flakes, and I am in the process of breeding some brine shrimp to feed them live.  Any advice on how to help these guys thrive and grow big?
 
Sorry about the pic size, it's my first time uploading pics.
 

 

 

[GuppyGirl20]

The top one is male and the bottom is female. I'm pretty sure the male is a Plakat and I think the female is a Veiltail. Watch your male though, it looks like there is some fin damage on his anal fin.
I got a baby betta myself back in April and (knock on wood) he is doing just fine. Keep doing what you're doing to keep them thriving and be on top of water changes and that should do the trick. I assume you know they like temperatures between 78 and 80 degrees F. Indian Almond Leaves (IAL) promote heathy immune systems in bettas so I like to put a half a leaf in my tank (which is 5 gallons). You can also get the extract if you like because the leaves can turn your water a tea color. Again, with tanks that small be sure that you are keeping up with water changes so ammonia doesn't build up.
WARNING!: I have been told that having a male and female betta next to each other where they can see one another can cause the female to swell up eggs and cause the female to die. ALSO bettas are jumpers. If the top isn't secure enough the male can get in with the female and they can kill each other. So be sure to keep the top good and separated. I wonder if there is a way where you can make a nontransparent divider to use?
Anyways, as long as you do those things, and don't over feed them, then you should have two healthy bettas on your hands

 
My betta is in my signature below this. I have a Journal for him in the betta splendens journal section called My Baby Doubletail if you want to check it out. Best of luck!

 

[Wildbetta]

The top one is a male plakat and the bottom one is female but is impossible to tell tail type without a clear shot of the anal and caudal fin(bottom and tail fin) completely open.  
 
Most divided tanks with both male and female do fine with no issues to either betta.  Most of the time if the female gets really eggy she will release the eggs herself or absorb them into her body instead of getting eggbound and suffering with it.  There are many that keep divided tanks that have a small section between the male and female divided sections to that both the bettas are not able to really get close to each other which is less stressful.  If you are going to divide the size tank you say you are, then that is a good option for you in this instance.
 
Doing frequent water changes, frequent feedings, and making sure the temperature is mid to high 80sF should help them grow.