Table 2. List of considered anomalies.

	Code	Description
Region	A	Cephalic vertebrae (carrying epipleural ribs)
	B	Pre-haemal vertebrae (carrying epipleural and pleural ribs and open haemal arch, without haemal spine)
	C	Haemal vertebrae (with haemal arch closed by haemal spine)
	D	Caudal vertebrae (with haemal and neural arches closed by modified spines)
	E	Pectoral fin
	F	Anal fin
	G	Caudal fin
	H	Dorsal spines
	I	Dorsal soft rays
	L	Pelvic fin
Anomalies	1	Kyphosis
	2	Lordosis
	3	Partial vertebral fusion
	3*	Total vertebral body fusion
	4	Vertebral anomaly (shape anomaly, ossification ridges, marked reduction in length or elongation, intervertebral bony plate)
	5	Anomalous neural arch and/or spine
	5*	Supernumerary neural elements/absence of neural elements
	6	Anomalous haemal arch and/or spine
	6*	Supernumerary haemal elements/absence of haemal elements
	7	Anomalous rib
	7*	Supernumerary pleural rib
	8	Anomalous pterygiophores (anomalous, absent, fused, supernumerary)
	9	Anomalous hypural (anomalous, absent, fused, supernumerary)
	9*	Anomalous or broken parahypural or fused with hypural/haemaspine
	10	Anomalous epural (anomalous, absent, fused, supernumerary)
	11	Anomalous ray (anomalous, absent, fused, supernumerary)
	12	Swim bladder anomaly
	13	Presence of calculi in the urinary ducts
	14	Anomalous maxillary and/or pre-maxillary
	15	Anomalous dentary
	16	Other cephalic deformities (glossohyal, neurocranium, ..)
	17L/R	Anomalous left/right opercular plate
	17*L/R	Anomalous, absent, fused branchiostegal ray
	18	Predorsal bones anomalies
	19	Hypural with decalcifications
	20	Decalcified pterygophore
	21	Anomalous epipleural ribs
	22	Anomalous dorsal ribs
	23	Anomalous pleural ribs
	24 L/R	Decalcified left/right opercular plate
	25	Epural with decalcifications
	26	Supernumerary bone
	27	Decalcified urostyle
	28	Decalcified vertebrae
	29	Anomalous postcleithrum
	S	Scoliosis
	Cl L/R	Anomalous left/right cleithrum
	Cor L/R	Anomalous left/right coracoid

Italics highlight severe anomalies, defined as those that affect the external shape of the fish body.