在一片繁茂的水面上，微风拂过，一群加州鲈鱼在悠闲地游弋。它们是池塘中的一员，但要想与主养品种共享这片天地，就必须具备一些特殊的条件。首先，混养量需要根据野杂鱼的数量来定，每1000平方米水面大约放入30-45尾体长5-10厘米的小型加州鲈鱼。此外，如果池塘中的野杂鱼较少，可以适当增加放养比例，但这时需要配合投放大量饵料鱼，如草鱼、鳊鱼等，以维持生态平衡。

饵料鱼分两批次投入，其中第一批与加州鲈鱼同时进入池塘，而第二批则是在7月底或8月初加入。这有助于保持水质均衡，并防止浮头现象。为了避免水质过肥，通常每7-10天会进行一次新水补充，这样做不仅能促进生物多样性，也能提升整体生态系统的健康。

夏季期间，加州鲈鱼可以采用夏花法进行饲养。在这种方法下，每1000平方米可放入2500-3500尾体长5-8厘米的大型加州鲈鱼。此外，还可以选择更大的规格物种，比如4.5-16厘米长的大规格鲤、草等2000-3000尾，以及已驯化习惯人工饵料的小规模物种900-1500尾。这不仅能够有效利用残留食物，还能提高整个生态系统的效率和稳定性。

对于池塘本身也有着严格要求，它们应该是长方形，有足够空间供fish swim around, with a flat bottom and ample water supply for easy drainage. The ideal size is between 1000 to 200 square meters, with a depth of 1.5 to 2 meters, and equipped with oxygenation equipment and pumps.

Before stocking the fish, it's essential to clean the pond using calcium hydroxide or bleaching powder. For every thousand square meters of pond surface, approximately130 to 220 kilograms of calcium hydroxide or 7 to 8 kilograms of bleaching powder should be used.

By following standard methods for filling the pond with water and fertilizing it, you can promote the growth of plankton in the pool. Additionally, by introducing various species like carp,bream,tiger barb etc., you can create an environment that supports both main breeding fish and California trout alike.

In summary, creating a thriving mixed aquaculture system requires careful planning and attention to detail. By understanding these conditions and implementing them effectively in your own ponds,you can successfully cultivate both main breeding fish and California trout together in harmony.