Fish Biology and Conservation Concepts

The video discusses bony fish, highlighting their characteristics, such as scales, bones, and gills. It explains the types of scales, parental care strategies, and the senses of fish, including the lateral line. The video also covers fish communication through sound and visual cues, and emphasizes the importance of conservation efforts and the impact of invasive species.

What is a key difference between bony fish and sharks?

• Bony fish have scales made of cartilage.

• Bony fish have bones made of calcium.

• Sharks have scales made of bone.

• Sharks have bones made of calcium.

How many species of fish are found in the Mercury Bay National Estuarine Research Reserve?

• 150

• 250

• 450

• 350

Do all fish have scales?

• Yes, but only freshwater fish.

• Yes, all fish have scales.

• No, some fish have soft skin and slime.

• No, only marine fish have scales.

How do seahorses care for their eggs?

• They carry them in their mouths.

• They attach them to seaweed.

• Males incubate them in a pouch.

• They lay them on the ocean floor.

What is a unique feature of the lateral line in fish?

• It helps fish communicate with each other.

• It allows fish to breathe underwater.

• It detects movement in the water.

• It helps fish see in the dark.

How can you determine the age of certain fish species?

• By analyzing their scale texture.

• By counting the rings on their otoliths.

• By measuring their length.

• By observing their color patterns.

What is one way fish communicate with each other?

• Through electric signals.

• By changing their color.

• Through chemical signals.

• By using sign language.

What is a common threat to fish habitats?

• Noise pollution

• Deforestation

• Air pollution

• Overfishing

What should you do if your pet fish becomes too large for its aquarium?

• Feed it less to reduce its size.

• Release it into a local pond.

• Dispose of it properly or rehome it.

• Keep it in a smaller tank.

What is a primary concern with invasive species in freshwater?

• They provide new food sources.

• They disrupt local ecosystems.

• They increase biodiversity.

• They improve water quality.