Cross breeding?

I have 3 female H. Comes, and a male H Erectus. The male's pouch has been slowly getting bigger. I didn't want to jump to conclusions, thinking it might be to show off to the females.

It has been getting bigger for 2 weeks now. he is not having any problems swimming, and he still eats great.

Is there anything I can do to verify if it is a health issue, or pregnancy?

Can the 2 species cross breed?

Thanks
 
I do believe they can cross breed.Below is a forum reply to help
you decide if he is pregnant.

http://answers.yahoo.com/question/index?qid=20070327082213AAORYJQ

Here is another good site to help with alot of questions you may have now or in the future.

http://www.seahorse.com/FAMA_-_Freshwater_and_Marine_Aquarium_magazine/Horse_Forum_2002/Horse_Forum_-_August_2002/
 
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