Swordtails are well-known beginner-friendly, community fish species, compatible with various other fish and environments. They have been bred for many generations, resulting in many different ...

The swordtail is a beginner-friendly tropical fish species. This hardy fish comes in various vibrant colors and can be kept in a freshwater tank as small as 10 gallons. These traits make swordtails ...

Behavioral Ecology and Sociobiology, Vol. 59, No. 1 (Nov., 2005), pp. 51-57 (7 pages) Males of the swordtail fish Xiphophorus cortezi are polymorphic for the pigment pattern vertical bars. Previous ...

Are you thinking of keeping fish as pets but don’t know where to start? Take a look at two of the most popular choices for beginners - Guppy fish and Swordtail fish. Here are the reasons why these ...

New research on swordtail fish suggests male courtships displays aren't always just for appealing to the ladies, but for showing off and scaring away other males too. Male swordtails court by swimming ...

When you've got to go, you've got to go -- upstream, that is, if you are a male swordtail fish seeking a mate, according to new research. When you've got to go, you've got to go -- upstream, that is, ...

Older Female Fish Prefer Imperfect Male Mates, Study Finds Date: November 15, 2005 Source: Ohio University Summary: There’s hope for the less-than-perfect male – if you’re a swordtail fish, that is.

It's the look of love--when female green swordtail fish see attractive adult males, they mature faster sexually, researchers now find. On the other hand, scientists discovered when young male green ...

When it comes to reproduction, most fish are external fertilizers, crop dusting eggs in a cloud of sperm. But swordtails (Xiphophorus) aren’t like most fish. These fish fertilize eggs internally and ...

ATHENS, Ohio (Aug. 18, 2008) — Though skin cancer is deadly to male fish, it also has one perk: The black melanoma splotches arise from attractive natural markings that lure female mates. A new study ...