Heteromuscidae? Adelia Nishida, the herring? Orezias? Protozoan fish

What is the picture below? Green carp? Oryzias Latips? Commonly known as Paddy fish, no more than 4 cm in length.

Features: the head is large and wide, the front end is flat and flat, and the base of the anal fin is very long. ?

Anthuridae? Butterfly? Mosquito fish? Gambia? Invasive fish

The picture below shows a fish that eats mosquitoes? Ambusia affinis, commonly known as wicker fish, pot-bellied fish and potherb fish.

Features: The body color is golden with green, and the abdomen is obviously swollen. The male fish has a long reproductive hole, and the female fish has a fan-shaped anal fin, which is 15.5 to 37.5 mm long, with small teeth, sharp snout, big eyes and no lateral line, and belongs to ovoviviparous fish.