Holocephali (chimaeras) > Chimaeriformes
(Chimaeras) > Callorhinchidae
Etymology: Callorhinchus: Greek, kalos, kallos = beautiful + Greek, rhyngchos = snout (Ref. 45335).
Environment / Climate / Range
Marine; brackish; demersal; oceanodromous (Ref. 51243); depth range 0 - 227 m (Ref. 26346). Subtropical, preferred 16°C (Ref. 107945); 33°S - 50°S
Southwest Pacific: southern Australia and New Zealand.
Length at first maturity / Size / Weight / Age
Maturity: Lm 71.0, range 70 - ? cm
Max length : 125 cm TL male/unsexed; (Ref. 26346); common length : 75.0 cm TL male/unsexed; (Ref. 9258)
Occurs on continental shelves to depths of at least 200 m (Ref. 6871). Migrates into large estuaries and inshore bays in the spring to breed (Ref. 6871). Feeds mainly on shellfish (Ref. 26346). Oviparous (Ref. 50449). Eggs are encased in horny shells (Ref. 205). Flesh is of good eating quality. Males have a small, club-like protuberance on the head and also long copulation organs near the pelvic fins (Ref. 557).
Migrates into large estuaries and inshore bays in the spring to breed (Ref. 6871). Oviparous, two egg cases (Ref. 26346) are laid on sandy or muddy bottoms and take up to 8 months to hatch (Ref. 6871). Embryos feed solely on yolk (Ref. 50449).Young hatch at about 15 cm (Ref. 26346).
Last, P.R. and J.D. Stevens, 1994. Sharks and rays of Australia. CSIRO, Australia. 513 p. (Ref. 6871)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00427 (0.00161 - 0.01131), b=3.12 (2.89 - 3.35), based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.6 ±0.29 se; Based on food items.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (K=0.06-0.26; tm=2-6; Fec=2).
Vulnerability (Ref. 59153
): Very high vulnerability (75 of 100) .