Yes. But they don't really fly. They jump out of the water and it looks like they have wings.
You will have to install it from the internet. Go to modthesims2.com and enter fish dna into the search box. Follow the instructions on downloading and installing from the site's faqs.
Only the redneck ocean fish hang out with the river fish. Also Salmon and Trout when the go spawn.
yes
goldfish,yellow parrot fish ,severom..