Infusoria are tiny organisms found in healthy aquariums.  It is a broad term referring to many types of micro-crustations.  

These are some of the first things that a baby betta will eat as they start to swim around the tank.

This is the first thing I feed my betta fry to go along with the Infusoria.  Vinegar Eels will swim throughout the tank so everyone can get a bite to eat.  They are easy to take care of too.  

There are two methods for feeding.  The first is to keep your culture in a bottle with a narrow top.  Place some cotton balls in the neck and pour some aquarium water on top.  The eels will swim up the cotton balls to the clean water where you can use a pipette to suck them out!  

The second is to use a pipette to suck out some vinegar.  Pour it into a coffee filter to separate the eels from the vinegar.  I'll add some aquarium water and suck up the eels to add to the tank. 

Keep at room temp. 

Baby Brine Shrimp, also known as Artemia, are small saltwater crustations that are some of the most nutritious foods for baby fish!  They are a little more difficult to keep and hatch, but woth the hassel for a healthy spawn.  

Aquarium Co-Op has a great guide on how to hatch and raise BBS for fish fry.  

Grindal worms are great for small fish and fry.  They require some maintenance, but aren't too difficult to culture. 

• To feed, use a pipette to add some water and suck up a few, or use tongs to grab a pinch. 

• Keep warm - they grow best around 72-82 degrees, and will die in too hot or cold conditions. 

• Feed daily - only give them as much as they will eat until the next feeding.  Overfeeding will open the door for mold, underfeeding will prevent them from growing quickly. 

• Can be fed dry fish food, veggies, cooked pasta, and even dog food.    

• To make a new culture, take a small container and add moist organic dirt.  Create a small crevice in the center and add a pinch of worms.  Feed.  Add water if necessary to create humid conditions. 

Much to my husband's chagrin, Mosquito Larvae can be easily cultured for fish food!  I start feeding newly hatched ML to my week old fry.    I keep large and shallow containers in the yard filled with leaves from the ground to promote growth.  As soon as I notice eggs I will move them to my small fry tanks. 

For larger fry I let them grow for a few days before scooping them up for food.  Be sure to cover the top of the container with plastic wrap once you see some  growing so they don't escape, or dump the containers before they get too big.