In that sentence your is an adjective, or a possessive pronominal adjective.
Tuna is a noun. Nouns are the names of / places / things. Tuna is a thing (fish).
part of speech
Adjective
What part of speech is thaw
A fish is a noun. To fish is a verb.
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There are mainly two different types of flying fish, the four-winged flying fish and the two-winged flying fish. Both can range in length from 14cm to 46cm. Flying fish have flatted corneas (The transparent layer forming the front of the eye) but most fish have curved corneas.
Flying fish have many predators in the ocean, including larger fish, seabirds, and marine mammals. Predators such as tuna, dolphins, and flying fish themselves are known to feed on flying fish. Flying fish are an important part of the marine food chain and play a key role in the ecosystem.
And is a conjunction.
In that sentence your is an adjective, or a possessive pronominal adjective.
The word fishing is a verb. It is the present participle of the verb fish.
Tuna is a noun. Nouns are the names of / places / things. Tuna is a thing (fish).
The word "species" is a noun. Here is an example of its usage in a sentence: There are over 28,000 species of fish on the planet.
Large is an adjective. In this sentence it is describing the noun fish and is part of the subject (large fish) of the sentence.
Wing is a noun; and airplane is a noun being used adjectivally.
part of speech