| 主要的食物 | 百分比 |
营养阶层 (y) |
掠食生活阶段 | 国家 | 地点 | 参考文献 |
|---|---|---|---|---|---|---|
| zoobenthos | 59 | 3.3 | juv./adults | New Zealand | Rakaia River, spring 1979-80. | 26965 |
| zoobenthos | 63 | 3.4 | juv./adults | New Zealand | Rakaia River, summer 1979-80. | 26965 |
| zoobenthos | 68 | 3.2 | juv./adults | New Zealand | Rakaia River, autumn 1979-80. | 26965 |
| zoobenthos | 50 | 3.3 | juv./adults | New Zealand | Lake Whangape main basin. Year: 1987 | 42752 |
| zooplankton | 77 | 3.2 | juv./adults | New Zealand | Lake Whangape south arm. Year: 1987 | 42752 |
| zooplankton | 73 | 3.3 | juv./adults | New Zealand | Lake Waahi. Year: 1987 | 42752 |