High-crested mahi-mahi (Coryphaena) enters the LRT

Updated February 7, 2020
with the addition of the pupfish, Pseudorestias, a closer sister to the wolffish, Anarhichas.

The speedy maui-mahi
(genus: Coryphaena, Fig. 1) nests in the large reptile tree (LRT, 1556 taxa) with the cave-swelling wolffish, Anarhichas (Fig. 2), basal to the barracuda (see update above) and several other clades.

FIgure 1. Mahi-mahi (Coryphaena) mounted as if in vivo.

FIgure 1. Mahi-mahi (Coryphaena) mounted as if in vivo.

Figure 2. Anarhichas in vivo. Note the basic similarities between this cave dweller and its open seas cousin, Coryphaena (Fig. 1).

Figure 2. Anarhichas in vivo. Note the basic similarities between this cave dweller and its open seas cousin, Coryphaena (Fig. 1).

Coryphaena hippurus (Linneaus 1758; 1.5m length) is the extant open seas predator mahi-mahi or dolphinfish, here related to the similar, but slower cave-dwelling, Anarhichas (below). The dorsal fin starts at the skull. The caudal fin is deeply forked. The teeth are small. Males have a tall forehead.

Figure 2. This is where the high forehead of the male mahi-mahi (Corphaena) comes from, one of the very few fish with a frontal crest.

Figure 2. This is where the high forehead of the male mahi-mahi (Corphaena) comes from, one of the very few fish with a frontal crest. 

Anarhichas vomerinus (Linneaus 1758; 1.5m length) is the extant Atlantic wolffish. It nests between the perch clade an the barracuda, Sphyraena (see update above). The marginal and vomer teeth are robust. The conjoined temporal fenestra meet dorsally along a thin ridge. Pelvic fins are absent.

Figure 1. Skull of the wolffish, Anarhichas. Compare to the pupfish in figure 3.

Figure 1. Skull of the wolffish, Anarhichas. Compare to the pupfish in figure 3.

References
Linnaeus C 1758. Systema naturæ per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata.

wiki/Atlantic_wolffish
wiki/Mahi-mahi

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.