The fact that they spend their lives immersed in mineral-rich waters means they’re fantastically nutrient dense. In many cases, shellfish provide vitamins and minerals which you’d be hard-pressed to find in any land-based animal or plant.
And because you generally eat the whole animal (not a particular section like with beef or chicken), you’re getting the full spectrum of nutritional goodness from your mussel or oyster. Unlike many other overpriced “delicacy” foods, oysters are well worth the extra bucks you fork out at the restaurant.
Not only are they amazingly rich and delicious in a nice white wine or garlic sauce, they also have plenty of nutrients and antioxidants. These include folate, thiamine, riboflavin, magnesium, iron, manganese, selenium and zinc.
Many of these are really difficult to obtain from other food sources, making them an important go-to within your weekly diet. With something that tastes so good, you’ll be pleased to hear that scallops are an excellent nutritional choice.
With pigs, if they’re allowed to roam and forage for the foods they want, their meat is amazingly nutritious. So too with these members of the phylum Arthropods, which are always wild caught (aside from some crayfish, but these farmed varieties are generally okay to eat as well).
While shrimp doesn’t really compare to other shellfish in terms of its nutritional properties, it’s still a good source of protein. It also has decent levels of selenium and calcium, and is a good source of iodine and B vitamins.
Certainly, you could do worse than to eat shrimp, but you need to make sure you source good quality varieties. That’s because their small size means they’re less capable of bio accumulating heavy metals like mercury.
You’re much more likely to get heavy metal poisoning from large predatory fish like tuna or salmon than these little critters. Cod and Pollock are similar in that they are both lean, white, firm, wild-caught fish.
Due to their highly unsustainable fishing track record and the fact that the common Atlantic varieties tend to be contaminated with heavy metals, they should be avoided if possible. American eel is often found in sushi in the U.S. and is generally very high in PCs and mercury.
For thousands of years, much of the Western world has avoided and reviled pigs due to their wide-ranging diet. For the song by Amanda Palmer & The Grand Theft Orchestra, see Theater Is Evil.
Examples of bottom feeding fish species groups are flatfish (halibut, flounder, plaice, sole), eels, cod, haddock, bass, grouper, carp, bream (snapper) and some species of catfish and shark. This feeding strategy allows bottom feeders to take advantage of the dead organic material that drifts down through bodies of water to the floor.
In ocean environments, this downward drift of detritus is known as marine snow. Bottom feeders may gather detritus manually, as some crab species do, or filter it out of the water using suspension feeding.
This recycling of organic matter is critical for the health of many aquatic environments as it helps maintain various biogeochemical cycles. In 2014, it was reported that deep sea bottom feeders absorb carbon dioxide by eating creatures such as jellyfish and cephalopods, allowing the gas to be contained at the sea floor rather than be recycled back into the atmosphere.
Other bottom feeders graze on living plants, as is the case in some sea urchin species. Lastly, some bottom feeders are carnivorous and specialize in either hunting other bottom feeders and benthic animals, or scavenging from sunken bodies.
Some carnivorous bottom feeders use the floor of their environment to ambush their prey. One common method is the animal using body movements to cover itself with sand or sediment, then attempting to catch unsuspecting prey with fast strikes.
Other animals burrow into the bottom and hunt with most of the body remaining buried, as in the case of oceanic Bobbie worms. In fish, most bottom feeders exhibit a flat ventral region to more easily rest their body on the substrate.
The exception may be the flatfish, which are laterally depressed but lie on their sides. Those bottom feeders with upward-pointing mouths, such as stargazers, tend to seize swimming prey.
Some flatfish such as halibut actually have a “migrating” eye that moves to the upward-facing side of the fish as it ages. In the aquarium, bottom feeders are popular as it is perceived that they will clean the algae that grows in the tank.
Generally, they are only useful for consuming the extra (fresh) food left by overfed or clumsy livestock; the added biomass of additional organisms means that the aquarium will likely be more dirty. Some specialized bottom feeders are more specifically sold as “algae eaters” to increase the amount of free oxygen and aesthetic appeal of a tank.
“Linking the Bottom to the Top in Aquatic Ecosystems : Mechanisms and Stressors of Benthic-Pelagic Coupling”. ^ Dash, Pagan & Keisha, Iranian & Manual, Sugar.
Marine snow: Its formation and significance in fisheries and aquaculture. “A New Reason to Love Bottom Feeders : They Suck Up Carbon”.
A study of a marine benthic community with special reference to the micro-organisms. Journal of the Marine Biological Association of the United Kingdom, 25 (3), 517-554. Doi:10.1017/S0025315400055132 ^ Fish against Monster Worms”.
Bottomfeedersfish by definition are those fish species who feed on the bottom of a body of water. And saltwater (halibut, flounder, eel, cod, snapper, grouper, rays, etc.
Exclusive bottom feeders usually have a flat body shape and mouth positioned very low so that they can hide on the bottom and suck in the food without being seen by predators. Mouth shape enables them to collect any kind of materials and even live organisms from the bottom.
Those species collect dead organic material and consume it, which is a way of filtering. By removing those materials from the aquatic environment, they create balance and healthy surroundings for other organisms, including fish species, which live in the same waters.
There are a few catfish species interesting to anglers, the most popular ones are Flathead, well, channel and blue. Except for the bottom, where catfish like to spend time during the day, you can often find the feeding on the surface, or in middle layers of water.
Carp is probably one of the most popular fish species among anglers, and it can be found in numerous places across all continents. Common carp will eat a variety of food including crustaceans, insects, larvae and fish eggs that can frequently be found on the bottom.
Unlike catfish, people don’t think of carp as being a bottom feeder, but it partially is. There are different species of bass, including striped, large mouth, small mouth, and spotted.
Bass will eat smaller fish species, frogs, crayfish, minnows, perch and similar. Some small fish species can spend their time on the bottom, and bass will hunt them there.
In saltwater across the world you can find numerous fish species that feed on the bottom. Here is bottom feeder fish saltwater list that includes those species interesting to anglers.
They feed on other fish species and basically any other aquatic animal that fits into their mouth. Flounders are also in a group of flatfish species, and they live on ocean bottom across the world.
European, Gulf, Southern, and Olive flounder are the most famous ones among these exclusive bottom feeders. Flounders vary in color, but their upper side is darker (brownish shades) than the belly, and they can easily hide in sandy or muddy bottom.
Among bottomfeedersfish we can find numerous species of eels and one of the most popular ones among anglers is European Conger. Most of the species interesting to anglers live in shallow seas, near the coast, and spend their time in the sand, mud, or beneath the rocks.
Snappers are a group of fish found in tropical regions of oceans across the world. Snappers, depending on a size and specie, will eat shrimp, octopus, squid, crustaceans, small fish, mollusks and similar marine organisms.
Some species, like the Atlantic Goliath Grouper can grow huge, weighing almost 400 kilograms. There are various species of groupers and their habits and appearance can vary, but most of them have no teeth and need to swallow their pray because they can’t bite it.
Groupers mostly eat fish, octopus, crustaceans and other smaller marine creatures. Their large mouth enables them to suck the pray from a distance and also to dig into the sand to build a shelter.
All of them have flattened bodies, gills that are placed on their ventral parts and large pectoral fins that are connected to their heads. Aquariums can be seen as small enclosed ecosystems that function in the same ways as ponds or lakes.
Algae eaters will increase the amount of oxygen in the aquarium and it will also look nicer and cleaner. Some people see bottom feeders as scavengers who eat unhealthily, rotting material and mud.
There are a lot of misconceptions about bottomfeedersfish species around the world and I hope, after reading this article, you know more about them. You can find them in almost any lake, river or ocean, and hundreds of species exist, but I decided to explain those frequently caught by anglers.