yes, I was in the Icefall Cave (Island Four) in the back of the cave (where you fight against some Team Rocket memebers with Lorellei). I was Surfing on the water, because I tried to catch a Lapras (quote: 1%; I killed it accidentaly) and there was a green tentacool. I caught it with Ultra Ball.
Noctowl nor hoot-hoot can be caught in firered you need to get one from emerald.
Yes by good rod or super rod
Growlithe can't be caught in leafgreen so have a firered version trade you one.
Clampearl cannot be caught in Fire Red and must be traded.
Go on the link given and it will give you all the information you need! Its the same ones that are caught in Pokemon yellow. The first Pokemon games.
no
Shroomish is not available to be caught in the wild in Pokemon FireRed, it must be traded from Ruby or Sapphire.
Chikorita cannot be caught in Pokemon FireRed. However, you can catch a Bayleef in Pokemon Colosseum, transfer it into FireRed, and breed it to get a Chikorita egg.
Yes, Grimer can be caught in Pokemon Fire Red.
train it to level 100!
Rare Pokemon that can be caught in firered are: Moltres, Zapdos, Articuno, Mewtwo, Raikou/Suicune/Entei (depends on which starter Pokemon you choose).
Magmar can only be caught in Pokemon LeafGreen, therefore, you have to trade.
Houndour can't be caught in firered so get one from emerald or colosseum.
Snubble cannot be caught in firered to get one trade one from emerald or colosseum.
No because it doesn't exist.
You'd have to trade it from FireRed or LeafGreen.
Cubones can be caught on Seven Island.