Quote Originally Posted by http://db.gamefaqs.com/console/psx/file/final_fantasy_viii_monster_encyclopaedia.txt
#H0054 - MONSTER'S DROPPED ITEMS
Low level drop - 1x Inferno Fang, 2x Inferno Fang
Low level Rare drop - 2x Fury Fragment, 1x Star Fragment
Middle level drop - 2x Inferno Fang, 2x Fury Fragment
Middle level Rare drop - 1x Star Fragment, 1x Energy Crystal
High level drop - 2x Fury Fragment, 2x Energy Crystal
High level Rare drop - 3x Fury Fragment, 4x Fury Fragment
Take off Rare Item and it should improve your chances of getting Energy Crystals.