Clownfish getting crabby

[hottie79]

Hiya, my two clowns (introduced at the same time) have always been best buddies, swimming together, sleeping together and everything else. Now all of the sudden, the big one, Clemantine, is kinda grumpy towards the smaller one, Tyra. If Tyra gets too close to her, Clemantine will chase her a little ways. Clemantine doesnt mess with the other fish if they get close, just Tyra.

I dont see bite marks on each other, but why the change? Clemantine is maybe an 1.25" and Tyra is 1" or so. THey dont have an anemone or anything, and dont seem to even fight during feeding. Could Clemantine be "turning female? Or are they just two different types of clowns and that is starting to cause a problem? I posted pics of them, in a different thread.
https://www.saltwaterfish.com/vb/showthread.php?t=210376 I dont want them to start fighting and kill each other. please, any ideas?
30 gallon tank..
1.026 SG
Amm 0
Trite 0
pH 8.2
trate 20
80 degrees
Other Inhabitants:
Clown Goby - citron
Royal Gramma
Sixline Wrasse
mandarin dragonet (please dont flame, this was not my purchase and trying to find someone that can take him)
Cleaner Shrimp
Brittle Star
2 small snails (hitchikers)
1 big snail
3 peppermint shrimp
2 red legged hermit crabs

 

[saltn00b]

they are 2 different species of clown? thats is your problem. 90% of the time two species will fight, unless in a large enough tank, but even then they might seek eachother out just to brawl.
often times they may seem like they get along at first, but after they are settled in for sometime, is when they start getting nasty

 

[hottie79]

I have no idea if they are different species. The LFS said they were the same, it was just a different coloring. Tyra just has so much more black than Clemantine. Do you think they are different? If so, should I remove one and trade it?

 

[saltn00b]

im no expert, but i saw your pics in the other thread and it appears that they are different species, if you are lucky enough to have a lFS that will credit you / take it back, then that might be your best option. seek others opinions as well tho