There is no Hebrew word for crayfish. Hebrew speakers use the word sar-TAHN for all kinds if shellfish such as lobsters, crabs, and crayfish.
A good Hebrew word for 'evil' is "RAH" (רע)
dag, pronounced DAHG
kipper (a type of oily fish) has no equivalent word in Hebrew. Israelis usually use the English word when referring to kippers.
There is no such word in Hebrew. But if you mean Hatov, that means "The good"
Nowhere.The word "whale" in the English translations of the book of Jonah in the Bible is a mistranslation of the Hebrew for a "large fish". A whale is a mammal, not a fish. We do not know the kind of fish the Hebrew was referring to.
×—×›×” (pronounced khah-KAH) = fish hook
If you mean the Tov, it is "good". There is no such word as Tobe in Hebrew.
The Hebrew word used in that context is טוב (tov), which is exactly equivalent to the English word "good" but it can also be used for "pleasant" or "excellent".
fish (noun) = dag (דג), pronounced dahgfish (verb) = ladúg (לדוג), pronounced lah-doog
There isn't a Hebrew word that starts with the letter z and that word means good life. The phrase "good life" is chayim tovim (חיים טובים).
A good resource is Morfix. But you must know how to read Hebrew to use it.