如何绘画圆形的热带鱼？

[[{"txt": "\u70ed\u5e26\u9c7c\u7684\u5916\u578b\u548c\u79cd\u7c7b\u662f\u6709\u5f88\u591a\u7684\u54e6\uff0c\u6765\u770b\u770b\u5982\u4f55\u7ed8\u753b\u5706\u5f62\u7684\u70ed\u5e26\u9c7c\u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/486884883913e8e58266860f352f477047187ddf.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}], [{"txt": ["\u5de5\u5177/\u539f\u6599"]}, {"txt": "\u7b14\u548c\u7eb8"}], [{"txt": ["\u65b9\u6cd5/\u6b65\u9aa4"]}, {"txt": "\u5148\u6765\u7ed8\u753b\u4e00\u4e2a\u5706\u5f62\uff0c\u4e5f\u5c31\u662f\u70ed\u5e26\u9c7c\u7684\u773c\u775b\u8f6e\u5ed3"}, {"img": ["https://exp-picture.cdn.bcebos.com/e57a258602214f57ebde7808732064fb970b73df.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u7136\u540e\u7ed8\u753b\u70ed\u5e26\u9c7c\u7684\u773c\u7403"}, {"img": ["https://exp-picture.cdn.bcebos.com/e996472ae3efe07892b9f405b96c576698cf65df.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u518d\u6765\u7ed8\u753b\u70ed\u5e26\u9c7c\u7684\u8eab\u5f62\u548c\u5634\u5df4"}, {"img": ["https://exp-picture.cdn.bcebos.com/2e223d85e036e291d7601853b2723d03baea5bdf.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u4e0b\u9762\u518d\u6765\u7ed8\u753b\u70ed\u5e26\u9c7c\u8eab\u4f53\u4e0a\u7684\u82b1\u7eb9"}, {"img": ["https://exp-picture.cdn.bcebos.com/3c42a5ea3e863048f6cbfc67c33104ebf7a752df.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u7136\u540e\u7ed8\u753b\u70ed\u5e26\u9c7c\u7684\u9c7c\u9ccd"}, {"img": ["https://exp-picture.cdn.bcebos.com/5e4e9c2b74ee1c32eb907a9f07f1d8a727334bdf.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u6700\u540e\u628a\u5b83\u7684\u5c0f\u5c3e\u5df4\u753b\u51fa\u6765"}, {"img": ["https://exp-picture.cdn.bcebos.com/cca2552c56ee7b7f2c8657c66ef4fcf5ef0d41df.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}]]