21. It does this only during the juvenile stage . 22. In this juvenile stage , immature trout are often called " parr " because of the marks. 23. Lamprey are being controlled by poisoning in the juvenile stage in the streams where they breed. 24. At five months they enter their juvenile stage . 25. It is known only from juveniles stages . 26. In nymphs, the growth of the juvenile stages is by gradual acquisition of features of the imago. 27. The striking bright orange juvenile stage , which is land-dwelling, is known as a "'red eft " '. 28. The larval and juvenile stages are the riskiest for the newts, while survival is higher in adults. 29. At the juvenile stage , the head, neck and upper-parts are buff brown, whereas the underparts appear buff white. 30. In its juvenile stages , the trunk was supported by grass-like leaves that grew straight out of the trunk.