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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 […]

Photo of Coleto Creek at US Hwy 77 with German Shepherds Oso and Maya. Photo by Anne Rokyta.

Coleto Creek Collecting Trip – December 21, 2017.

Photo by Anne Rokyta: Coleto Creek at US Highway 77 with German Shepherds, Oso and Maya.   December 21, 2017 was warm, an occurrence happening more and more frequently lately. The weather was sunny, and temperatures hovered around 80°F (~27°C). It was a perfect first day of winter for fish collecting. Our nephew and his […]

Photo of a group of Lucania goodei from Coleto Creek, Texas in a sorting jar.

Lucania goodei, the Blue Fin Killifish

Photo: A group of Lucania goodei, the bluefin killifish, in a sorting jar.   While collecting fish in Coleto Creek in Victoria County, Texas (I’ll be blogging about this collecting trip shortly) with our nephew (Darin), his wife (Anne), and three-year-old daughter (Sylvie), Darin picked a fish out of the seine net and asked me […]

Photo of a shoal of Poecilia reticulata, McCauley Springs, NM.

Update on Poecilia reticulata, McCauley Spring

Photo: a shoal of Poecilia reticulata, McCauley Spring I first wrote about this fish for my column in Tropical Fish Hobbyist, January 2013 issue (http://www.tfhmagazine.com/details/articles/expendition-to-mccauley-spring.htm). Here’s a quote from that article about this guppy (the quote comes from my original text and may differ from the published text): “Most everyone is familiar with Poecilia reticulata, […]

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 an Orange Freckled Swordtail male.

Orange Freckled Swordtails

Photo above is a male Orange Freckled Swordtail. The grid behind him is in inches and shows his size. Those of you who have read many of my past articles and blogs know that a common theme throughout my writings is serendipity (could also be called “luck”). This interesting fish arose from a mistake. The […]

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 female Veiltail Blushing Swordtail.

Veiltail Swordtail

Photo: A female Veiltail Swordtail. A few months ago while processing our Blushing Swordtails I discovered an unusual female. She appeared to be a veiltail, but I wasn’t sure. Before continuing discussing that particular female, let me provide some background. Our breeding colony of Blushing Swordtails consists of lyretail females and normal males. Why is […]

Photo of three fingernail clams, Sphaerium corneum, on a finger.

Update on Fingernail Clams, Sphaerium corneum

Photo: Closeup of three Fingernail Clams, Sphaerium corneum, on a finger. Okay, I thought I could get away with a short blog (see my previous blog: http://goliadfarms.com/fingernail-clams-sphaerium-corneum/), but right off the bat its shortness and lack of natural history led to a question from Tim Gray, a fellow fish keeper and friend. He asked, “Do […]