Blastoise never learns Crunch. Blastoise does not learn Crunch, but it does learn Bite. This is when it is a Wartortle (or Squirtle) and is on level 16. If you have a Blastoise on level 16 (which is not really possible), it will learn Crunch.
In Pokémon FireRed, Nidorina would already have the moves of Growl and Scratch upon capture however it will learn Tail Whip at Level 8, Double Kick at Level 12, Poison Sting at Level 18, Bite at Level 22, Helping Hand at Level 26, Fury Swipes at Level 34, Flatter at Level 43 and Crunch at Level 53.
Gyarados cannot learn crunch by any means
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Arcanine itself cannot learn Crunch from leveling. However it's unevolved form, Growlithe, can learn Crunch at level 42. You can also hatch a Growlithe with the move Crunch via breeding.
Blastoise never learns Crunch. Blastoise does not learn Crunch, but it does learn Bite. This is when it is a Wartortle (or Squirtle) and is on level 16. If you have a Blastoise on level 16 (which is not really possible), it will learn Crunch.
Nidorina learns Earthquake at level 43. It is a powerful Ground-type move that can deal significant damage to opposing Pokemon.
Luxio will learn Crunch at level 33 but you have to stop evolution at level 30 though. You can always evolve it to Luxray and it will learn at level 35 instead.
In Pokémon FireRed, Nidorina would already have the moves of Growl and Scratch upon capture however it will learn Tail Whip at Level 8, Double Kick at Level 12, Poison Sting at Level 18, Bite at Level 22, Helping Hand at Level 26, Fury Swipes at Level 34, Flatter at Level 43 and Crunch at Level 53.
Gyarados cannot learn crunch by any means
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Arcanine itself cannot learn Crunch from leveling. However it's unevolved form, Growlithe, can learn Crunch at level 42. You can also hatch a Growlithe with the move Crunch via breeding.
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It learns Crunch at level 41. This is 6 levels earlier than Mightyena, who learns it at level 47.
Grottle learns crunch at Lv42. Torterra will learn it at Lv45 if you want Grottle to evolve
Nidoqueen does not evolve. If you evolve a Nidorina at level 58 in Gnerations 4 or 5, it will learn Super Power. If you evolve a Nidorina later than level 58, you'll have to go to a Move Relearner, or Move Tutor.