Home tropical fish aquariums are home to a number of pretty fish and seaweeds. Perfectly harmless right? Not in the wrong environment. It is surprising how hardy some of them can be if let loose in the wild. In a report released today to the California Ocean Protection Council, lead author Susan Williams, an evolution and ecology professor with the UC Davis Bodega Marine Laboratory, found that more than 11 million non-native ornamental marine individuals — such as tropical fish, seaweed and snails bound for aquariums — representing at least 102 species are being imported annually through California’s ports of San Francisco and Los Angeles, primarily from Indonesia and the Philippines. And 13 of those species have been introduced to California marine waters — presumably after being released from aquariums.