Fishes are more comfortable in

Options

A. Hot water
B. Warm water
C. Cold water
D. Ice

Answer

To determine the conditions in which fishes are more comfortable, we need to analyze the relationship between water temperature and dissolved oxygen levels. Here’s a step-by-step solution:

### Step 1: Understand the Importance of Oxygen for Fish
Fishes, like all aerobic organisms, require oxygen for survival. The availability of dissolved oxygen in water is crucial for their respiration.

**Hint:** Remember that all aquatic life depends on dissolved oxygen for survival.

### Step 2: Analyze the Effect of Temperature on Dissolved Oxygen
It is known that the amount of dissolved oxygen in water is inversely related to temperature. As the temperature of the water increases, the solubility of oxygen decreases. This means that warmer water holds less dissolved oxygen compared to colder water.

**Hint:** Think about how gases behave in liquids at different temperatures.

### Step 3: Compare Cold Water and Warm Water
In cold water, the dissolved oxygen concentration is higher, which means that fish will have more oxygen available for respiration. Conversely, in warm water, the lower levels of dissolved oxygen can lead to stress and discomfort for fish.

**Hint:** Consider how fish might react to different oxygen levels in their environment.

### Step 4: Conclusion
Based on the analysis, fishes are more comfortable in cold water because it contains a higher concentration of dissolved oxygen, which is essential for their survival.

**Hint:** Summarize your findings by focusing on the relationship between temperature and oxygen availability.

### Final Answer
Fishes are more comfortable in cold water.