1. Fish that can be caught and kept by rod and reel are called game fish.
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2. Invasive species are a problem in our wetlands.
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3. A native species is a species that occurs naturally in an area.
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4. It is okay if water does not have oxygen in it.
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5. The Gulf of Mexico is a part of the ocean.
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6. Marshes are nurseries for baby fish.
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7. The ocean is so big that we can't pollute it.
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8. The paddlefish is one of the largest freshwater fishes in North America.
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9. Bacteria can be useful in an aquarium to change harmful fish wastes and ammonia into less toxic substances.
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10. pH is the concentration of hydrogen ions in a substance.
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11. Otoliths are fish vertebrate.
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12. Dams can alter fish habitat.
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13. Asian carp compete with native fish for food.
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14. Nitrites and ammonia are more toxic to fish than nitrates.
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15. Most fish need specific environmental conditions to grow and survive.
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