Although they are both billfish, marlins belong to the family Istiophoridae, while swordfish are the only members of the family Xiphiidae. Visually, the biggest difference is that marlins have a ridge on their back while swordfish have a single dorsal fin.Know More
Marlins have a single large dorsal fin as well, but unlike that of the swordfish, the marlin's fin tapers down into a low ridge that runs along most of the fish's back. There are three types of marlin. These are the hatchet marlin, blue marlin and white marlin. All three have the distinctive ridge, although at varying heights.
Another visual difference between the marlin and the swordfish is that marlins have pelvic fins, which are located on the underside of the fish near its head. Swordfish do not have pelvic fins. Marlins also have double caudal keels, while swordfish have a single one. Body markings vary, with marlins having fin spots and body stripes, depending on the species, while swordfish tend to be solid in color.
Behaviorally, there is some evidence that swordfish use their bills in hunting more often than marlins do. Swordfish are more likely to slash prey to kill it, although both species rely more on speed to catch their food. Their range differs as well, with marlins living exclusively in the Atlantic Ocean, while swordfish are found in the Atlantic, Pacific and Indian Oceans.Learn more in Biology
Transudate and exudate are both fluids extruded from various parts of the body, but transudate is usually clear and relatively free of cells and proteins while exudate has a high content of cells, cellular debris and proteins. The terms "transudate" and "exudate" refer to the fluid itself and not to a specific ailment or injury. However, the terms are often associated with transudate pleural effusion and exudate pleural effusion.Full Answer >
Bacteria and protozoa are very distantly related, with bacteria classified as prokaryotes and protists as eukaryotes. This means that protozoa are more closely related to humans than either is to bacteria. The two organisms are structurally distinct. Bacterial cells lack a nucleus, and protozoa contain organelles, such as mitochondria.Full Answer >
The main difference between zooplankton and phytoplankton is that phytoplankton has the ability to manufacture its own food through photosynthesis or chemosynthesis. Zooplanktons are incapable of making their own food. Zooplanktons are animal planktons,while phytoplanktons are planktons that are capable of carrying out photosynthesis.Full Answer >
Endoplasm and ectoplasm are names for the inner and outer portions of an amoeba’s cytoplasm. Ectoplasm is the clear outer cytoplasmic layer of an amoeba. Endoplasm, on the other hand, is the inner granule-rich cytoplasm of the amoeba.Full Answer >