[Tesla]

Originally Posted by aerohead

For what I have for fish,the authors report the same thing,that the bluefin has the lowest drag form of all the pelagic fish.
The bummer is trying to locate plan views of the fish,as most of the water goes around their sides rather than below or over.These views would really show where the action is,and frustrates a complete analysis.

Just had a look around, here's best I could find on a quick look:




Description from site:

DORSAL WALL OF BODY CAVITY

The roof of the body cavity was, in cross section, convex in all three varieties. The convexity began abruptly with the origin of the haemal canal and was greatest in this region, diminishing progressively toward the posterior portion of the cavity. The upper sketches, a, of Figure 4, depict diagrammatically the shape of the dorsal wall of the body cavity viewed in a longitudinal section cut through the vertical median plane of the fish.

Anterior to the ninth or tenth vertebra the roof of the body cavity was, in cross section, relatively flat. With the origin of the haemal canal on the tenth vertebra the roof of the body cavity sloped abruptly downward, and from this point posteriorly the depth of the haemal spines determined the level of the dorsal wall of the cavity. This ventral bulge was not confined to the median line. It extended transversely toward the belly wall, but was separated from the latter by a depression on either side (Figure 4, b and c). This depression was formed mesially by the side of the ventral bulge and laterally by the belly wall. It was in the shape of the bulge, and in the size and shape of the depression that the varieties differed.

Site Link:
A Comparison of the Bluefin Tunas, Genus Thunnus From New England, Australia and California1