Mackerel tuna
Drag and drop the label on the correct fish.
Euthynnus affinis
Katsuwonus pelamis
Correct!
Euthynnus affinis is the left fish and has a naked corselet area containing oblique dark stripes and usually 1 – 3 small dark spots between pectoral- and pelvic-fin bases (spots absent in this case). The right fish is Katsuwonus pelamis.
Incorrect.
Euthynnus affinis is the left fish and has a naked corselet area containing oblique dark stripes and usually 1 – 3 small dark spots between pectoral- and pelvic-fin bases (spots absent in this case). The right fish is Katsuwonus pelamis.
Euthynnus affinis always have black spots present between the pectoral- and pelvic-fin bases.
These spots are not always present, they sometimes fade or disappear as condition is lost.
Nice job!
These spots are not always present, they sometimes fade or disappear as condition is lost.
Drag and drop Euthynnus affinis in the drop zone.
Correct!
Euthynnus affinis have a series of oblique dark stripes behind mid-first dorsal fin. Euthynnus affinis is on the bottom right, Sarda orientalis is on the left and Auxis rochei is on the top right.
Incorrect.
Euthynnus affinis have a series of oblique dark stripes behind mid-first dorsal fin. Euthynnus affinis is on the bottom right, Sarda orientalis is on the left and Auxis rochei is on the top right.