Archive / Hybrids

RSS feed for this section
Photo of two three-month old male breeder Bronze Sailfin Mollies. Their gonopodia are just developing and the sailfin hasn't developed as yet.

Developing a Strain from a Single Fish

Photo: Two very young male Bronze Sailfin Mollies showing the improved coloration I selected for. They are too young to sport nice sailfins, but they grew up with large dorsals. As evidence of their youth, look at their gonopodia (anal fin), which are just beginning to develop. How many times have you seen a single, […]

Photo of two Amazon mollies, Poecilia formosa.

Poecilia formosa – Amazon Molly

Photo: Two Poecilia formosa, Amazon mollies, collected from Coleto Creek at Highway US 77 in Victoria County, Texas.   December 12, 2017, four of us plus two German Shepherds went collecting on Coleto Creek in Victoria County, Texas (see my blogs: http://goliadfarms.com/coleto-creek-collecting-trip-december-21-2017/ and http://goliadfarms.com/lucania-goodei-the-blue-fin-killifish/). During that trip, we collected a unique molly, Poecilia formosa, the […]

Female Red Tuxedo Lyretail Swordtail.

Fancy Red Tuxedo Swordtails

Photo: Female Red Tuxedo Lyretail Swordtail. As is typical of our strain, females don’t have as bright red coloration as males. We’ve started working on adding three fancy fin types, lyretail, hifin, and plumetail to each of our commercial swordtail, maculatus, and variatus lines. I’m going to use our Red Tuxedo Swords to demonstrate how […]

Photo of a Giant Sailfin Molly male.

Blue and Giant Mollies

  Photo: A male Giant Sailfin Molly showing his size against a one-inch grid. About four years ago, I wrote an article about my efforts to produce a blue molly. A molly blue enough for my tastes doesn’t exist. This blog will provide an update. First, I’ll summarize the article. In 1998, I crossed a […]

Photo of a group of Blue Opal Maculatus showing two color variations.

Developing a Hifin Plumetail Blue Opal Maculatus

Photo: A group of Blue Opal Maculatus Years ago I created what I called a Hifin Blue Opal Maculatus, as its name implies a maculatus-type platy. I wrote about creating this fish for Tropical Fish Hobbyist. To read the TFH article see: http://www.tfhmagazine.com/details/articles/the-blue-opal-platy-serendipity-in-breeding.htm. I’ll provide a synopsis of the development of this fish below. Long […]

Photo of male silver lyretail molly.

Fish Breeding, Introducing Recessive Gene

Photo is a male silver lyretail molly displaying a nice sailfin. This is the fish you want to create starting with a male silver sailfin molly and female green lyretail sailfin mollies Fish Breeding, Introducing Recessive Gene Recently I began a blog series on introducing new genes into a livebearer population. Technically the proper usage […]

Photo of a male hifin redwag swordtail.

Introducing a Dominant Gene

Photo: A male Hifin Redwag Swordtail. I’m beginning a blog series on introducing new genes (technically alleles, but I’ll bow to common usage) into a xiphophorine population. In this blog I’ll discuss the mechanics of introducing a single dominant gene into a xiphophorine population. By the way, this doesn’t only apply to xiphophorines or even […]

Photo of a first generation Red Freckled Hifin Swordtail resulting.

Red Freckled Hifin Swordtail

Photo: A first generation Red Freckled Hifin Swordtail male in front of one inch grid to show size. Okay, it’s going to take a while to untangle the genealogy of this fish. Let’s take the female first. The pictured female is large. She’s in front of a one-inch grid that shows she almost four inches […]