| 主要的食物 | 百分比 |
營養階層 (y) |
掠食生活階段 | 國家 | 地點 | 參考文獻 |
|---|---|---|---|---|---|---|
| zoobenthos | 34 | 3.5 | juv./adults | New Zealand | Buchanans Creek | 37734 |
| zoobenthos | 34 | 3.5 | recruits/juv. | New Zealand | stream near St. Andrews | 37734 |
| zoobenthos | 44 | 3.2 | recruits/juv. | New Zealand | various sites in South Canterbury and North Canterbury | 37734 |
| zoobenthos | 56 | 3.4 | recruits/juv. | New Zealand | Dog Kennel stream | 37734 |