B. How to feed tropical fish.四、 阅读填空 D. Some advice on keeping goldfish Like you, most animals have eyes. But how and what they see can be very different. 1.(A)This fish is called a four-eyed fish, but it really has only two eyes. The top half of each eye sees above th...
Betta fish are often seen in bowls that are too small for them. This can make them unhappy and unwilling to eat. Be sure that your betta fish has room to swim and explore. If you notice your fish turning away or spitting out food, you may want to experiment with different pellet brand...
How Often to Feed Your Betta Fish Most tropical fish will spend their days foraging for food. They are not built to have large, infrequent meals, and bettas are no exception. It is best to feed your betta at least twice a day. If you have access to your aquarium throughout the day,...
The equipment for your aquarium can often be the single largest expense when you set up an aquarium. Exactly how much it will cost will depend on the size of the aquarium and what type of tropical fish you want to keep. Saltwater aquariums require more expensive equipment then freshwater aqua...
As news of the devastation spread, divers around the world with a soft spot for Malapascua and its threshers sent generous donations to help feed the survivors and rebuild homes. Dive centres across the island, meanwhile, hurried to instal artificial reefs. ‘We were picking up rocks u...
The equipment for your aquarium can often be the single largest expense when you set up an aquarium. Exactly how much it will cost will depend on the size of the aquarium and what type of tropical fish you want to keep. Saltwater aquariums require more expensive equipment then freshwater aqua...
A fish net.D. Nice stones.4. Why do you need a test kit?A. To make sure the water is safe for your fish.B. To keep your aquarium beautiful.C. To keep food constanty(持续地) supplied.D. To enable the tank to clean itselfregularly.5. How often should you change the water for ...
inches long (12-50 millimeters), minus their long antennae. Their heads point downward, almost as if they're built for ramming. Males usually have wings, but females often don't. Those that do usually havevestigial wings-- small, undeveloped wings that often don't allow the roach to fly...
Family Balaenidae, which includes the bowhead, the northern right and the southern right whales. Bowhead whale aside, this group is often just referred to as theright whales. They get this name because they were the "right" whale to hunt for, due to their abundant oil and blubber [Car...
The shoals of sardines move through the ocean like flocks of starlings, often creating spherical shapes known as bait balls in order to trick their predators. And, conveniently for spectators like me, they rise close to the ocean’s surface to stay warm and to feed on plankton. Advertisement...