Ichthyodectidae

Ichthyodectidae is an extinct family of fish known as bulldog fishes. 
Systematics.
The basal phylogeny is badly resolved, leading to many ichthyodectiforms that are simply known to be rather primitive, but where nothing certain can be said about their precise relationships. 
Size classification.
"Chirocentrites" is the smallest of them all. The second-smallest fish known to man is "Amakusaichthys", which resembles an ichthyodectiform girl with navy blue lips. "Cladocyclus" is a medium-sized fish. "Pachythrissops" might be the third-smallest one, but it is also medium-sized. 
"Aidachar" may be dragon-like, but it is actually an ichthyodectiform which was originally a pterosaur. "Cooyoo" sounds cute, but it is not a perfect name for a baby. It is smaller than "Amakusaichthys". 
"Xiphactinus" is the largest ichthyodectiform. In life, it would have resembled a gargantuan, fanged tarpon. "Gwawinapterus" is also a giant fish, but "Xiphactinus audax" broke the record. 
"Gwawinapterus" resembled "Xiphactinus", but it bore a resemblance to "Hydrocynus goliath".