Flakes
Flakes
Yes.
bloodworms or fish flakes
They can live together but you will have to be carefull with the temperature setting of your heater/thermostat and try to keep the tank fairly steady at around 75F to suit both species of fish. Tetra Tropical Flakes are a good all round fish food. Bettas are insectivores and need more protein than guppies so it is a good idea to feed the fish a few Betta pellets and live brine shrimp occasionally.
Assuming that you are referring to neon tetras, there are several brands of commercial "Tetra Flakes" that can be bought at nearly every pet store. I believe that there is also a pellet version of "Tetra Flakes".
There are a variety of foods that are good for tetra fish and it is best to mix them up a bit. They should be fed prepared pellets, flakes and wafers. The flakes should be mostly meaty with some vegetable matter. One should also avoid flakes that contain fillers such as wheat. Flakes containing Spirulina algae a few times a week is also suggested.
you can feed it crushed up fish flakes. you put some fish flakes in a plastic bag grind then up with your fingers and get a toothpick wet it stick it in the bag and put it in the water.
Mosquitofish (one word) is a nickname giving to a species of fish (Gambusia) that feed on mosquito larvae and pupae.
Yes they are omnivores and should be OK with most "All purpose" type Tropical Fish Flakes like Tetramin.
koi fish would normally eat goldfish food try tetra fin goldfish flakes they are made for goldfish and koi
When owning a fish it is important to know what they eat. A minnow will eat fish food flakes that are made for it to eat. Make sure the fish flakes are meant for minnow.