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Echinoderms can have ambulacral parts that include ossicles, plates, spines, and suckers. For example, sea stars or "star fish" have an ambulacral groove on their oral side (underside). This ambulacral groove extends from the mouth to the end of each ray or arm. Each groove of each arm in turn has four rows of hollow tube feet that can be extended or withdrawn. Opposite the ambulacral groove is an ambulacral ridge on the aboral side of each ray.
What else can I help you with?
On which surface of a starfish suckers visible?
Star fish don't have eye spots, or eyes, they depend on their skin to detect light.
What do fish do when the water surface is frozen?
If the water surface is frozen, fish continue to swim.
Do cartilage skeleton fish have visible pharyngeal slits?
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What type of fish lives at the surface of the sea?
Pelagic fish
Your fish is staying at the top of the tank?
Some fish are surface fish and others are not. Without you saying what kind of fish it is that is at the surface it is impossible to say if anything is wrong. BUT! if the fish are breaking the surface and gasping for air, then you have a major water problem and need to do some very large water changes immediately. Otherwise your fish will die.
What is the History of fish hook?
i have seen native American artifacts of fish hooks carved from bone. the line end of the hook had a groove around the shank no doubt to retain a string or thread.
How might fish that lived in a very deep ocean ecosystem be different from fish that live close to the ocean's surface?
the fish that live close to the surface are not unusual and the fish that live in the deep ocean are unusual. the unusual and surface fish both eat different thing's don't live the same way
Are the bigger fish closer to the surface than the smaller fish?
Not necessarily.
What are the differences between using dry lures and wet lures for fishing, and how do these differences impact the success of catching fish?
Dry lures are designed to float on the water's surface, while wet lures sink below the surface. Dry lures are more visible to fish and are ideal for topwater fishing, while wet lures mimic the movement of live bait underwater. The choice between dry and wet lures depends on the fishing conditions and the behavior of the fish.
What benefit of ice on the surface of lakes is most helpful to fish?
it insulates the fish
Why did my fish sink when it died and not float to the surface like other fish?
When a fish dies, its body becomes heavier due to the gases produced during decomposition. This causes the fish to sink to the bottom of the water instead of floating to the surface like live fish.
How do you feed my fish?
I would have to get to your place and access your fish to feed them by adding suitable fish food to the surface of their container.
