What specific water quality condition are Yellow Bullheads highly tolerant of?
Answer
Low dissolved oxygen levels
The remarkable ecological plasticity of the Yellow Bullhead is strongly evidenced by its high tolerance for suboptimal water quality factors. Among the most significant of these tolerances is its ability to thrive even when dissolved oxygen levels in the water drop significantly low. This hardiness allows *A. nataloides* to persist and remain abundant in aquatic systems suffering from heavy organic loading or pollution—conditions that cause major fish kills among more sensitive species such as trout or bass, which require higher oxygen saturation to survive.
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