Correct spelling, explanation: the choice between fish and fishes depends on the context and how you’re referring to multiple fish. Fish is often used as the plural form when referring to multiple fish of the same species or in a general sense. It’s a collective plural noun. Fishes is used when referring to multiple fish of different species. It’s less common and typically used in a more specialized or scientific context. In everyday conversation and writing, fish is generally the preferred plural form.

Definition of fish:
1. noun (singular, plural), an aquatic, craniate, gill-bearing animal that lacks limbs with digits
The fishermen caught a variety of fish, including trout, salmon, and bass, during their weekend fishing trip.
In the aquarium, you can observe schools of colorful fish swimming gracefully among the coral reefs.
2. verb, catch or try to catch fish, typically by using a net or hook and line
They decided to fish in the river early in the morning, hoping to catch some fresh trout for breakfast.
She loves to fish in the serene lake near her cabin, finding it both relaxing and rewarding.

Collocations with fish:
Some most commonly used collocations include:
1. Fish market: refers to a place where fish are sold, often fresh from the sea.
The fish market by the harbor is known for its wide variety of seafood.
2. Fisherman/fisherwoman: describes a person who catches fish, typically for a living or as a hobby.
The skilled fisherman cast his line into the river at dawn.
3. Fishing rod: a piece of equipment used for catching fish, consisting of a pole with a line and hook.
He chose his best fishing rod and tackle box for the weekend fishing trip.
4. Fish and chips: a popular dish consisting of battered and deep-fried fish served with French fries.
When visiting the seaside town, be sure to try the local specialty, fish and chips.

Correct spelling, explanation: the word fishes is correct, but it is less commonly used than fish as a plural noun. Both fish and fishes refer to multiple fish, but there are some differences in usage. The first one is the more common plural form and can be used to refer to multiple fish of the same species or in a general sense as a collective plural noun. The second one is less common and is typically used in a more specialized or scientific context to refer to multiple fish of different species. The choice between fish and fishes often depends on the specific nuance you want to convey.