Planning for blood parrot cichlids? Tank size, food, and care guide.

Hello and thank you for your questions. Here is a helpful link about Blood Red Parrot Cichlids:
https://www.petsmart.com/fish/live-fish/goldfish-betta-and-more/blood-red-parrot-cichlid-4034863.html

Here's another link about cichlids in general:
http://www.tetra-fish.com/fish-type-landing/cichlid.aspx

These fish can grow to be large so you will want to start with a 30 gallon tank minimum. I recommend to start with 3-4 fish. These can be housed with other fish but they need to be within the same 'community'.
Decorations are important because they give fish a place to hide. Provide a few large rocks, arches and covered areas where fish can hide. Then you can place the plants around the structures. Live plants can aide in providing healthy water.
Tetra is a good fish food brand. They have been around a long time and have many varieties to chose from to meet your fish's needs. Make sure to supplement with fish as described in the article as well.
Lastly, the frequency of water changes depends upon your tank including water hardness, number of fish, size of tank, filtration system and if live plants are present. A good rule of thumb is a 25% water change every 2 weeks.
Cichlids may not be the best choice for a first time fish owner without doing some prior research. I recommend to read up on general aquarium care, cichlid care and to stop by your local aquarium store to discuss any issues specific to your location (such as water hardness, mineralizations within the local water or low/high pH levels). Local stores that specialize in fish and aquariums are often dialed into the local water and can provide a lot of helpful information.
I hope this helps and please feel free to post any additional questions.