| Keeping the adults with the catfish and bream is OK as long as he can catch them when needed. If you miss with the cast net the first time, it may take a few days to get them to come up for feed again. If the adults are junk, I would leave them there. You should find something smaller and more manageable for better adults as they are collected. When you say spring-fed, do you mean the water is piped to the ponds from a spring or does it just seep in from the ground? If water is constantly seeping into the ponds and overflowing a standpipe to a creek, it is going to be really hard to maintain a green water bloom and zooplankton. It will also be impossible to dry. Free water is a mixed blessing. Such ponds are notorious for having persistent string algae because you cannot build up the lignin compounds needed to suppress it. You can try pumping down a pond and keeping it pumped down for a week or so, rotenone the trash fish (if any) and spray the algae with Diquat or Rodeo. When everything is dead, refill and fertilize heavily. If the situation is the way I imagine, you should not deepen the ponds. It will probably make them even harder to manage. Four feet is OK for mud-pond grow-out. You can stock about 200,000 fry in a half-acre pond. Obviously, this is more than one spawn, but the fewer you stock, the faster they will grow. Mixing spawns always creates some problems. It will be harder to understand how well a particular pairing performs. The greater the age difference, the more cannibalism you will have. At modest stocking densities, you may be able to get by with 10 days of age difference. So, you will have to make some judgment calls. If there are more spawns than there are ponds available, then you will have to lump them. You need to be thinking about your production and marketing plan. What is the production goal and where are you going to sell the fish? I suspect that you and this guy have different marketing plans in mind. He may want to sell a lot of small junk fish at a low price per piece. You may want to sell a few high-quality fish at a much higher price. This sounds like a good fit, but there will be conflicts too. A least one pond will have to be devoted to tosai and tategoi which means there is less space for making bait. Are you going to be willing to mix a spawn from good Momotaro broodstock with a flock spawn? In a year, you and this guy are going to know most of the same tricks. At that point, what will be your contribution to the operation? Writing a good contract now will be really tough. Too much is unknown and unpredictable. Go for an agreement about how you will handle things over the next nine months. By winter, you may know what to ask for and what to expect. I think you should keep your original plan going at the same time and go ahead and build the ponds at home. They will not go to waste. -steve hopkins |