1. The cultural and ecological importance of fork‐tailed catfish, Neoarius graeffei, in northern Australia is linked to its energy stores, or how fat fish are. Water resource development that alters river flow has the potential to impact the energy stores of fork‐tailed catfish.
2. We investigated the influence of flow and habitat on the energy reserves of fork‐tailed catfish during the dry season in an intermittent wet–dry tropical river using data collected in three years with different flow volumes from a variety of habitats, i.e. different mesohabitats (tributary, main‐channel) and pool sizes. Julian day was included to describe seasonal trends. We used mesohabitat and pool size to reveal where fork‐tailed catfish had the most energy reserves and flow‐year and Julian day to reveal when reserves were greatest.
3. Body condition and the quantity of intramuscular and coelomic fat were used to describe energy reserves. Predictive models created for each metric revealed that fork‐tailed catfish body condition and intramuscular fat were greater in years following moderate to high wet‐season flow, smallest in a year following very low flows and decreased as the dry season progressed. Coelomic and intramuscular fat of fork‐tailed catfish was also lower in smaller pools. There was no association between mesohabitat and energy store.
4. These when and where hydro‐ecological patterns highlight the importance of wet season flows and groundwater‐fed refuge pools for fork‐tailed catfish energetics in this wet–dry tropical river.
5. Intermittent rivers flowing through wet–dry tropical savanna habitats are under increasing threat globally and the results of the present study illustrate how flow variation may impact on biota and influence their continued survival and functional roles.

中文翻译：

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fish鱼肥鱼何时何地？间歇性热带河流中叉尾cat鱼Neoarius graeffei的能量储量的水生态学决定因素

1. 在澳大利亚北部，叉尾cat鱼Neoarius graeffei的文化和生态重要性与它的能量储存或肥鱼的种类有关。改变河流流量的水资源开发有可能影响叉尾cat鱼的储能。
2. 我们使用三年来收集的来自不同生境（即不同的中生境（分流）的流量不同）的数据，研究了干湿断续的热带河流在干旱季节中流量和生境对叉尾cat鱼能量储备的影响。 ，主渠道）和池大小。包括儒略日来描述季节性趋势。我们使用mesohabitat和池的大小，以揭示其中叉尾鲶鱼有最能源储备和流动年和儒略日透露，当储量最大。
3. 身体状况以及肌内和腔内脂肪的数量用来描述能量储备。为每个度量标准创建的预测模型表明，叉尾moderate鱼的身体状况和肌内脂肪在中等至高湿季流量之后的年份中较高，而在极低流量之后的一年中最小，随着旱季的进行而降低。在较小的水池中叉尾cat鱼的体脂和肌内脂肪含量也较低。中居与储能之间没有关联。
4. 这时候和地方水文生态格局突出雨季流量和地下水喂养的避难所池对该干湿热带河叉尾鲶鱼热力学的重要性。
5. 流经干湿热带稀树草原栖息地的断断续续的河流在全球范围内受到越来越大的威胁，本研究的结果说明了流量变化如何影响生物群并影响其持续生存和功能作用。