For a detailed discussion of Finned/Sashimi Fishes please see .
Others, great length of fin or of membrane, as the flying fish and the bat.
The left is a Swordfish c159/r357, the "leftover" base cell r1c9 is the fin. The possible eliminations of the Swordfish without the fin are r3c7, r5c3, and r7c6. Of those only r3c7 sees the fin (same box) and can be eliminated.
You know what I love even more than seeing the fish on containers on top of ice (as opposed to directly on ice)? Seeing Fin/Dora's absolutely fantastic responses to consumer inquiry! Fantastic PR and customer service!
Anglers can purchase a bag of 10 3 1/2-inch Fin-S Fish for $3.99.
What is the function of fins of fish? - Quora
To be able identify and discuss fish, it is helpful to know all thetypes of fish fins. It makes descriptions much easier, and there reallyaren't that many. Here are the eight types of fish fins:Fins are essential to fish, the predecessors of legs they give a fish lift, steering capability, braking and momentum. In some species they are used to hold on to the substrate while in others they allow the fish to walk, or even to fly. Without fins a fish would just be a fancy worm.Of course, not all fish have every type of fin. Refer back to this pageif you come across a fin you don't know while reading our fishidentification series.The shape and structure of a fish's fins reflect both its lifestyle and its evolution. The ancestors of modern fish, both bony and cartilaginous, looked, in terms of their fin structure, much like modern dogfish and sharks. The evolution of the modern design, with a symmetrical tail and highly manoeuvrable body fins was only possible after the evolution of the swimbladder. The exceptions to this design are the Birchirs, Paddlefishes and Sturgeons, which are among the most ancient and primitive of the bony fishes and still retain the larger upper lobe to the caudal fin, and some of the flying fish in which the lower lobe of the caudal fin is larger.The earliest known fishes had fins, albeit not as many as modern fish, but even the most ancient and primitive agnatha had a caudal fin. The cephalaspids had one or two dorsal fins and an anal fin as well as a pair of primitive pectoral fins. By the time of the placoderms pelvic had also evolved.Therefore the early fish evolved an asymmetrical tail which supplies forward momentum with the top lobe and lift with the smaller bottom lobe, which, not being stiff, flexes in counterpoint to the upper lobe, and pectoral fins that work much the way the wings of a bird or an aeroplane do. Thus the tail lifts the back of the fish and the pectoral fins lift the front. Of course the fish has to keep moving, if it takes a rest it will still sink. You will probably have noticed that sharks and rays are either moving constantly, or resting on the bottom, they do not hover in the water column.