how long will it take for my desert hairy scorpion to grow ??????? he/she is only < > about that big haha i was just wondering how long it to grow

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1 imperial scorpion( keano )
2 leopard gecko (el nino & el bex-angel)
2 cat fish ( shovel mouth, banjo)
1 silver dollars
4 plecs (sailfins and normal)
1 cichlid ( dont know which 1 lol)
1 german short-haired pointer (hattie)