Fish covered in tooth-like armour could help reveal how teeth evolved


Bristlenose plecos are a type of armoured catfish

Shutterstock/TTONN

A pet fish adorned with tooth-like scales is helping biologists tackle a longstanding debate about the origin of teeth, explore how body structures can be lost regained during evolution.

The suckermouth armoured catfish is commonly found in pet shops and, unusually for a bony fish, has tooth-like structures called odontodes covering its skin. These physically resemble teeth, erupting from thickened patches of skin to form layered structures of pulp, dentine enamel, similar genes appear to be active in both …



Source link