We Love Our Fish and Our Fish Poop
From: Phyllis Davis, Co-Inventor, Portable Farms(TM) Aquaponics Systems and President, Portable Farms, Inc. Call me! 858-750-2053

Say, we’ve posted “the rest of the story” about the history of Portable Farms(TM) Aquaponics Systems on our website in an article entitled, “How Fish Poop Can Stop the Cycle of Poverty and End World Hunger.” It’s a good read, full of gripping moments and entrepreneurial ANGST, along with joy and a dash of fury and drama. Enjoy! http://portablefarms.com/bio.html
Let’s talk about fish today. Tilapia fish.
I just read a great article in the New York Times written by Michael Tortello about aquaponics and it quoted a man in upstate New York who has started a tilapia fish hatchery in the basement of his family’s home. He said, “My mentor in the tilapia world told me I really wouldn’t be a master of tilapia until I killed at least a million fish,” he said. “I’m not there yet.”
Upon hearing this quote, I didn’t feel quite so bad. Ha Ha We haven’t killed many fish in our vast experimentation with tilapia. In fact, very few. Although our farms ARE PORTABLE, still, fish are touchy about being moved to new locations. I recall one move we made. We loaded 50 gallon black plastic trash cans into the back of our pickup truck, filled the cans with cured fish water, placed air stones for fresh air in the cans, put batteries in the back of the truck to run the bubbles. We tied down the large cans so they wouldn’t/couldn’t move and then we carefully placed about 100 fish (they were small fish) in each trash can and then drove, very carefully, about 12 miles to their new home. All of them arrived safely and we placed them in their new home: 200 gallon insulated stock tanks. We DID lose a few fish which we found floating the next morning but very few.
We do NOT breed fish. We buy our 1″ tilapia “fingerlings” from local breeders. We have considered breeding fish but we’re always so busy with the ‘business’ of selling our systems, that we can’t find the time and we can’t make the time because every day is so busy. I will admit, breeding fish is NOT that time consuming, it’s just a matter of daily care and attention because after all, you are dealing with fish who are breeding and it takes love and patience to turn that into a money-making business that breeds and sells fish to the public.
So, here’s the scoop for the tilapia we use in our systems. Because we live in Southern California, we are restricted what what types of fish that our local Fish and Game allows us to use. And, we are permitted to use “California Hybrid Tilapia” which means that all of the fish we use in our systems are only male. Yes, you heard me correctly, all male. Because California has a limited amount of available water, Fish and Game restricts the use of fish of male and female talapia in aquaponics systems because they are prolific breeders.
All the fish used in Portable Farms(TM) Aquaponics System are male fish that are crossbred of Mossambica and Hornorum tilapia. This cross is called ‘female fatal’ because the females all die very young. The same number of offspring are produced, but only the males survive. These male tilapia are fertile, but there are no females for them to breed with, so these fish are legal in the state of California because they can’t breed in our water systems.
Now, having said that, a colony of 6 female Mossambica and 1 male Hornorum tilapia can breed up to 30,000 ‘fry’ (fish under 1″) per year. So, you can see, they are prolific breeders.
We HIGHLY recommend our friend, Edgar Sanchez, in Orlando, Florida, to buy your own breeding colony. A breeder colony consists of six female pure breed orange O. Mossambica, and one male pure breed improved body form O. Hornorum. The price for a colony is $399.00 (2 colonies $699.00, 3 colonies $999.00) plus shipping. His website is packed with useful information about breeding fish at home in aquariums: http://tilapiafarmingathome.com But, BEFORE YOU CONTACT HIM, I suggest you call your own local Department of Fish and Game and make sure they’re legal in the county in your State.
I’ll talk to you about care of feeding of fish in upcoming blogs. The phone’s ringing and my coffee’s cold. My day has begun.
Your friend,
Phyllis Davis








