Just a fun little quiz. It goes without saying but don't look up the answers! Question 1 - How many species are there in the genus Phycodurus? Question 2 - What is the largest known octopus species? Question 3 - The Sea Toads (genus Chaunacidae) are also known as what? Question 4 - True or False? Splitfin Flashlight Fish produce light by mixing specialised body fluids, causing a chemical reaction. Question 5 - How does one tell the difference between Volitans Lionfish (Pterois volitans) and Common Lionfish (Pterois miles)? Question 6 - What is the toxin produced by boxfish (genus Ostraciidae) called? Question 7 - True or False? Barnacles are close relatives of limpets Question 8 - What is the support structure found in squids called? Question 9 - Moray eels and cichlids have pharyngeal jaws. What does this mean? Question 10 - How do sponge-eating marine angelfish eat sponges without getting hurt by the glass-like spicules inside the sponges?
Alright, I'll give this a go! 1. Monotypic, just one. Leafy sea dragon. 2. Giant pacific octopus, am I right? 3. Toadfish? I've always called them Sea toads, not familiar with another term. 4. Im assuming so, true. 5. I'm assuming there are some differences, but I just don't know what distinguishing differences to which is which. 6. Ostriccidae isn't a genus as far as I know, the (ae) makes me think its a family, but Pahutoxin? Probs got that one wrong. 7. False, their crustaceans. 8. If you mean main body, I'm pretty sure its the mantle, I remember reading it somewhere. 9. I think it means that they can stretch an protrude their jaws out farther to reach things, like different muscles that can extend out their jaws slightly wider? 10. Don't know.
For information, names ending in -idae are Families, which are always named after a type genus. 4. Think this is one of the fish that bioluminesce using symbiotic bacteria. 8. The structure is the pen. 9. Pharyngeal jaws are an extra set of jaws in the throat. And, do Boxfish use Tetradotoxin?
Once there are a couple more replies I'll post the answers, not now though because people could just look at the answers!
Same for Chaunacidae (using word "genus" when meaning family). All taxons ending in -idae are families and all animal families must end obligatory in -idae. I would have be unable to reply (from memory) questions 5, 6 and 10. The remaining ones I know but they're already all solved.
1. No idea 2. Giant Pacific Octopus 3. No idea 4. No idea 5. No idea 6. Tetradotoxin 7. False 8. No idea 9. No idea 10. No idea
ANSWERS Question 1 - One, the Leafy Seadragon (Phycodurus eques) Question 2 - Giant Pacific Octopus (Enteroctopus dofleini) Question 3 - Coffinfishes Question 4 - False. Flashlightfish light comes from a bioluminescent bacteria that like in specialised organs under the fish's eyes. Question 5 - Volitans Lionfish have feathery bits (can't remember what they're called) above their eyes and mouth, Common Lionfish do not. Question 6 - Pahutoxin, but ostracitoxin is a valid answer too (it's an older name for pahutoxin). Question 7 - False. Limpets are molluscs and barnacles are crustaceans. Question 8 - Pen or gladius Question 9 - They have a second pair of jaws in their throat Question 10 - They coat the sponges in a thick layer of protective mucus before swallowing the sponge.
