well fish are sexual creatures. with sexual parts. they are not asexual but sexual, which means that two fish have intercourse, well maybe 3 if for fun. then come baby fish and that is their relationship.
silver fish
an alligator and fish
sharks and the little fish that suck parasites off of them
Atlantic porkfish have symbiotic relationships with many fish in the ocean. They eat the parasites that they find on other fish.
lichens, angler fish, vermiform appendix of ruminants.
Clown fish and sea anemone; the clown fish isn't stung by the anemone and makes its home in the anemone while when the clown fish is eating the anemone gets all the leftovers
clownfish and anemone, hermit crab and anemone, and some types of fish clean other fish to eat their dead scales and parasites.
Sometimes they eat the meal (Insects) and sometimes they are the meal. Fish eat Frogs.
sea turtles have friendly relationships with other sea turtle species, and frock
A competitive relationship is when two different animal species are fighting for the same services of the environment.
If he doesn't do relationships and u want one you should just move on ....girl there's other fish in the sea.
Fish... They open and close there mouth and again, and again etc... Also fish can swim in the sea, there are lots of different types of fish and some can be eaten and yeah laaa !!