Hello all! My first post here but most likely not my last. I love plants but know basically nothing about them them so you are my plant's only hope. A while back I purchased a packet of succulent seeds from a company called Buzzy. It came with some soil for it and around 6 seeds of a few different types. Sadly only one of the little guys has made it this far but he has been doing well but I am a little concerned about little Spikey (I know, I know-very original...) as he has had his lower part turn from a nice bright green to a not so nice brownish. I have watered him the same as I have his whole life according the instructions that were on the package and wondered if I am doing something wrong or if it is normal. I am also hoping to get info on his species and on when/how/if I should/can transplant him. I know there are stickies on some of this but didnt know if there might be species specific info. Thank you all !!!!!!

It looks good to me. I would have no clue what name to give it except for cactus. There is no rush to uproot this plant, it is still quite young and looks like it has plenty of space (maybe share a picture of the container from further back so we can see the dimensions).

If this is an indoor plant, it will enjoy as much natural light as you can provide. Right in front of a sunny southerly facing window would probably be ideal. Hours of daily sun year round, weather permitting, with no curtain or blinds in the way. I'm not sure where it's been, but that's a good guideline for most indoor cacti once they are old enough to resemble an actual cactus. As for water, it would be good to saturate the soil (assuming the water has an exit through holes at the bottom) and then allow it to dry out halfway or more at depth, but not sit bone dry for any extended period. Baby cacti tend to be more tolerant of extra water and less tolerant of bone dry soil, compared to their adult counterparts, but those are general guidelines.

With a picture of the container, some info about the exposure, and some info about how much and how often you have been watering, we might be able to give more specific advice.

Sorry for the extremely late response to your post. The little guy started looking better and slooooowly getting bigger so I figured all was well. Well lately it has started looking a little rough again and I am hoping for some advice on how to help him out. Answers to your questions:

He is inside (but as the weather gets better here he will spend some time on our patio). He sits on a shelf in front of an unobstructed window and gets direct sun from not long after sunrise until around noonish.
He is in a glass bowl (what the kit we bought came with) with about an inch and a half of soil and no drainage.
We give him enough water to make the soil feel moist whenever it feels dry to the touch on the surface.

I don't think the plant is big enough to be moved, but in a few months you might think about doing that. The current container is kind of huge compared to the size of the plant and the lack of drainage makes it a little tricky to know when to water and not leave the cactus with wet feet.

My recommendation would be a 2 or 3 inch pot with holes at the bottom, and ideally a soil mix with about half rock (perlite, pumice, or gritty equivalent, but not fine sand) mixed in. You can make various other combinations work (and what you've got has worked so far, to the extent the seedling is still alive) but good drainage helps with watering. It allows you to water thoroughly, to saturation, and then allow the soil to go mostly dry at depth fairly reproducibly before watering again.

The plant has grown a bit over the last 6 months, but not a whole lot, and not as much as I might have expected. Getting the soil properly wet and then allowing it to go mostly dry (but not bone dry) is probably helpful there. I guess there is some difference between barely hanging on vs. growing strong... and time will tell.

The light sounds good but be very careful if and when you move the plant outside, because indoor sun and outdoor sun are not the same. Regular window glass blocks much of the harmful UV part of the spectrum (which our eyes do not see) making it much kinder to baby plants. Exposing an indoor plant to direct overhead sun is a risky maneuver if you don't provide a period of gradual accomodation first, over the course of weeks. So I would advise caution there.

Thank you very much for the advice. Is there any kind of plant food that I could/should give him?

The best plant food is sunlight.

Optimistically, at least it managed to break the soil and sprout. In my opinion, one of the most important things to do is to transplant and I suggest you use 30% shade netting or use glass to block some sunlight when transplanting. You may say how can you be afraid of the sun as a cactus, and I have to say that exposing houseplants to overhead sunlight is a risky act.For any plant, they are vulnerable when traveling on the move.

I would keep that shading on until it is 6 inches tall. If you give it full sun now, you will heavily stunt it, and it will turn red and stop all growth. After you have stunted it, it takes a lot of work to get them growing again, putting them in heavy shade.

Heavy shade and cactus don't belong in the same sentence. It probably won't handle full blasting sunshine but some compromise. Its in the house behind glass, that's plenty of shade and will probably get only a few hours of sun, even in ckm's sunniest window. Without sun, it will be etiolated.

You might actually want some etiolation. Some Japanese techniques I learned for raising slow growing cacti (eg. Ariocarpus). The seedlings are raised in heavily shaded for 3-5 years. Then the seedlings are taken out of their shaded setup, and hardened of to be grown normally.