How to Say "crayfish" in Spanish
The Spanish word for “crayfish” is “cangrejo” — A2 level. This is a very common word in everyday Spanish.
English → SpanishA2
nounA2
specifically 'cangrejo de río'

Examples
Había muchos cangrejos en las rocas de la playa.
There were many crabs on the rocks at the beach.
Pedimos una ensalada con palitos de cangrejo.
We ordered a salad with crab sticks.
Ese proyecto va como el cangrejo; en vez de avanzar, retrocede.
That project is going backwards; instead of moving forward, it's regressing.
Gender of the word
This word is masculine. Even if you are talking about a female crab, you still use 'el cangrejo'.
Don't confuse with the zodiac sign
Mistake: “Using 'Cangrejo' for the star sign.”
Correction: In Spanish, the zodiac sign is 'Cáncer', though the symbol for it is a 'cangrejo'.
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