Hello,
the specimen on pic1 is a Channa obscura (formerly known as Parachanna obscura), a species from Central Africa (especially Congo River) - growing up to 45cm ...
the specimen on pic2 ... there are two possibilities: Channa bleheri (normally this species has crimson-red spots on the head sides, but it is possible that this individuum is "shock-coloured") - or a Channa gachua, a local variety from Assam, India, that looks in many points similar to Channa bleheri, but has no red spots on the tail fin - unfortunately the tail fin cannot be seen on the pic.
Greetings
Uwe