Fullmetal Alchemist, Blood+ Recommendations
If you like fullmetal alchemist then I promise u will get stuck through every episode of this anime. Just like fullmetal alchemist, characters are well developed and there are no fillers. In fma we have Chimeras and in blood+ Chiropterans. Chiropterans are undead monster with the ability to disguise themselves as human. They live by feeding on peoples' blood. There is a secret organization called the Red Shield that exists to hunt down the Chiropterans.
[or vice-versa] Both animes deal with a little bit of a "gore" theme and center between teens who have abilities/characteristics unique from others. Both series also imply the importance of family, acquaintances, and life xD (the main characters of each series have their family the antagonist! kewl)
Not completely the same, but they're both really good. There's fighting scenes that must be seen. Blood+ is definitely a lot more bloody than Fullmetal Alchemist, but in the end both characters are fighting for something that they want to accomplish.
Epic storyline, epic characters, everything's pretty original in its own right. Anime's a similar length too.