Stickleback Fish Characteristics and Behavior

The video explores the three-spined stickleback, a relative of the seahorse, detailing its physical characteristics, breeding habits, and adaptability. It highlights the stickleback's unique nesting behavior, habitat preferences, and species variations, including the nine and fifteen spine sticklebacks. The video concludes with a discussion on the stickleback's adaptability and widespread distribution across the northern hemisphere, emphasizing its resilience and lack of threat.

What is the maximum length a three-spined stickleback can reach?

• 15 centimeters

• 20 centimeters

• 11 centimeters

• 5 centimeters

How many spines can a three-spined stickleback have on its back?

• Nine to twelve

• Thirteen to sixteen

• Five to eight

• Zero to four

What unique behavior do male three-spined sticklebacks exhibit during the breeding season?

• They sing

• They build nests

• They change color to yellow

• They migrate to the sea

What is the secretion called that male sticklebacks use to build nests?

• Glycogen

• Albumin

• Spigen

• Mucus

Which species of stickleback is the smallest freshwater fish in Britain?

• Three-spined stickleback

• Fifteen-spine stickleback

• Two-spine stickleback

• Nine-spine stickleback

What color do male nine-spine sticklebacks turn during the breeding season?

• Jet-black

• Red

• Blue

• Green

Where is the 15-spine stickleback typically found?

• Mountain streams

• Harbours

• Freshwater lakes

• Desert oases

What is the typical lifespan of a stickleback?

• Less than a year

• 5-6 years

• 1-2 years

• 3-4 years

In which regions are sticklebacks not commonly found?

• Southern Hemisphere

• Northern Hemisphere

• British Isles

• Canada

What characteristic makes sticklebacks highly adaptable?

• Their color-changing ability

• Their diet

• Their size

• Their ability to live in poor quality water