A fishy business

September 07, 2018 12:00 am | Updated 04:50 am IST

At his organic fish farm, A Ravichandran hopes to revive some nearly-lost native freshwater varieties

“It has a protruding sharp fin on the dorsal side that can pierce your hands. So, catching it was a difficult art that few mastered. Eating it was easier though, as it had a single central bone that came off easily.” Fish farmer A Ravichandran describes the native catfish ( nattu keluthi), as we walk through thorny shrubs in Arittapatti village, near Madurai.

The sandy loam soil sinks beneath our shoes as we tread over footprints of cattle and peacock feathers. A set of seven rocky hillocks comes into view once we ascend the lofty bund of an irrigation tank, of which only a small collection of murky water remains, while the rest of the water body is a vast expanse of dry land.

In this little water is where Ravichandran has been growing over half-a-dozen varieties of native freshwater fish for six months. Amidst bird song, fragrant flower fields and idle trees is this oasis of a natural/organic fish farm, that is hoping to revive some of the near-extinct fish types. “Gone are the days, when freshly caught fish from the village pond was a part of our daily lunch. Many water bodies have dried up and those that hold water are let on lease for fish farming. There are few ponds where the native keluthi is found now,” shares Ravichandran.

“Those that are cultured in farms are grown in small pits of 30x40 feet that are lathered with chuna and the fish are fed chemicals to make them gain maximum weight in a short period of time. If grown organically, many fish varieties take over six months to attain a weight of 250 grams, but with chemical feeds, they gain well over half a kilo in just three months. Similar is the case with carps ( kendai ), murrel ( viraal ) and saw fish ( uluvai ),” says the 35-year-old.

“Organic farming is much about what you feed the fish. I let native shrubs and plants fester and putrefy in the water, and the fish feed on them. Leaves of Tanner’s Cassia ( avaram ) and hopbush ( virali ) are ideal,” shares Ravi, who also runs Kayal, an informal group of like-minded aspiring organic fish farmers in Southern Tamil Nadu. He adds, “Drying of water bodies is just one reason for losing native fish. The fish eggs remain dormant in the slush and mud and once it rains again, they hatch back to life. However, the real problem is with agriculture done on dry tank beds during summer, and the usage of pesticides and chemical fertilisers that kills micro-nutrients and fish eggs in the soil.”

Now, Ravi’s fish farm is teeming with a healthy population of some native fish that have become rarer, such as ayirai,keluthi, and varieties of kendai, apart from freshwater crabs. “I am yet to introduce bigger varieties such as viraal and koravai. Once the North East Monsoon starts, I may bring in more varieties.”

Ravi, who has done a five-year study on the region’s freshwater fish, says, “My idea is to put them back where they belong — in natural ponds and as healthy food on plates.”

Ravi has conducted a

five-year study on the region’s freshwater fish

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