Betta is sick, the Underside of belly looks bloody

[kymob]

Betta has not been doing to well. The underside of his tummy looks like he has been bleeding inside and coloring is off and looks pale. I have Treated him with furham 2 but no help now treating him with both metroplex and kana plex. No bloating and is eating and swimming good. Any suggestions on what it is? and if I am treating with proper medication. thanks

 

[Ghelfaire]

Can you post a picture?