B Cubed Press has two open anthology calls listed.
The first is titled "After the Orange". They're looking for sci-fi/fantasy stories of 500 to 5000 words set in a post Trump world. The deadline is December 15, 2017 and payment is 2cents a word plus royalty split. You can find the details here.
The second call is titled "Cosmic Caravans". This one is looking for science fiction stories of 300 to 3000 words for pre-teen readers. The deadline is October 7, 2017 and payment is 2cents a word plus royalties. You can find the details here.