Your fish is not going to starve, you don't have to worry about that just yet. If he still hasn't eaten anything in a month then we worry about him starving.
You don't normally buy live Brineshrimp online.
But they are usually delivered to petshops once a week because it is a live food and usually dies at the shop within a few days, unless they have a nice tank for it. Perhaps call the local petshops and ask if they have any live brineshrimp available. If they don't, then ask if they carry it and when it comes in. Then go to the shop on the day it comes in and buy a small bag of it.
If you do manage to buy a small bag of live brineshrimp, pour it into a bowl and keep it in the fridge. Then use a spoon to scoop a few out and put them in with the fish. He should eat them and if he doesn't there is a problem with the water quality, temperature or a disease.
You could also ask if they carry live daphnia. It is a small freshwater crustacean that most fish love.
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Your temperature is fine at 78F.
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The water quality could be an issue especially if you are adding food and it is not being eaten. Any food in the water will create ammonia and that will stress and even kill fish. An established filter will remove any ammonia from the water but the filter must be established and have lots of beneficial bacteria living in it.
If you don't have an ammonia or nitrite test kit, take a glass full of tank water to the petshop and have them test the water for ammonia, nitrite & pH. Write the results down on a piece of paper and put them on here. The results will be numbers like: ammonia 0.25; nitrite 1.0; pH 6.8.
If the shop says the water is fine ask them what the actual readings were. We need the numbers.
If you can't get to the petshop for a few days, then do another water change. Change 75% of the tank water and replace it with water that has no chlorine/ chloramine in. Gravel clean the tank too just in case there are little bits of food in the gravel.
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You can usually buy live aquarium plants online. Do a Google search or check Ebay or Craig's list or Gumtree, (depending on what country you live in) and see about buying some from there. Or ask the local petshop to order you some in. Ask the petshop for Water Sprite (Ceratopteris thallictroides). It is a floating plant but also does well when planted in the gravel.
Petshops usually get live plants in each week so find out if they can order you some plants and then go and pick them up when they are delivered.
You don't normally buy live Brineshrimp online.
But they are usually delivered to petshops once a week because it is a live food and usually dies at the shop within a few days, unless they have a nice tank for it. Perhaps call the local petshops and ask if they have any live brineshrimp available. If they don't, then ask if they carry it and when it comes in. Then go to the shop on the day it comes in and buy a small bag of it.
If you do manage to buy a small bag of live brineshrimp, pour it into a bowl and keep it in the fridge. Then use a spoon to scoop a few out and put them in with the fish. He should eat them and if he doesn't there is a problem with the water quality, temperature or a disease.
You could also ask if they carry live daphnia. It is a small freshwater crustacean that most fish love.
------------------------
Your temperature is fine at 78F.
------------------------
The water quality could be an issue especially if you are adding food and it is not being eaten. Any food in the water will create ammonia and that will stress and even kill fish. An established filter will remove any ammonia from the water but the filter must be established and have lots of beneficial bacteria living in it.
If you don't have an ammonia or nitrite test kit, take a glass full of tank water to the petshop and have them test the water for ammonia, nitrite & pH. Write the results down on a piece of paper and put them on here. The results will be numbers like: ammonia 0.25; nitrite 1.0; pH 6.8.
If the shop says the water is fine ask them what the actual readings were. We need the numbers.
If you can't get to the petshop for a few days, then do another water change. Change 75% of the tank water and replace it with water that has no chlorine/ chloramine in. Gravel clean the tank too just in case there are little bits of food in the gravel.
------------------------
You can usually buy live aquarium plants online. Do a Google search or check Ebay or Craig's list or Gumtree, (depending on what country you live in) and see about buying some from there. Or ask the local petshop to order you some in. Ask the petshop for Water Sprite (Ceratopteris thallictroides). It is a floating plant but also does well when planted in the gravel.
Petshops usually get live plants in each week so find out if they can order you some plants and then go and pick them up when they are delivered.